State Highway Infrastructure Report - Illinois - State - Reporting - Transportation Performance Management

State Highway Infrastructure Report - Illinois

The information below summarizes the TPM Highway Infrastructure performance measures, which include four pavement condition measures and two bridge condition measures. Per 23 CFR 490, State Departments of Transportation (DOTs) are required to establish 2- and 4-year targets for these measures. The targets should represent the anticipated condition/performance at the mid-point and end of the 4-year performance period. State DOTs establish targets at the beginning of each 4-year performance period, and report on progress every two years. When establishing targets, State DOTs have the flexibility to use the methodology they deem most appropriate. FHWA encourages States to review data sets and trends and consider factors that may affect targets. Performance targets should be data-driven, realistic, and attainable and should align with the performance management framework and legislative intent.

The targets and discussion of basis for targets, optional adjustment of targets, progress, and planned activities were provided by the State DOT in its most recent biennial performance report. FHWA has not edited this information. It is provided to help bring context to the State DOT’s performance targets and progress. The data in the tables and graphs is from the biennial performance report or HPMS data submittal as noted below each measure summary. Any questions about the information should be directed to the State DOT.

Data reported by State DOTs was collected in the previous year, representing the condition/performance at the time of collection. Thus, in the tables and graphs below, FHWA labels data with the year representing the condition/performance, rather than the year the data was reported. The same thing is done for the targets--the year represents when the corresponding actual condition/performance data will be collected, not reported. More Information.

Significant Progress Determination
FHWA determines significant progress for these measures after the mid-point and end of each performance period. A State has met or made significant progress toward target achievement if “actual” condition/performance is equal to or better than the established two-year target or “actual” condition/performance is better than baseline performance 23 CFR 490.109(e). As provided in 23 CFR 490.107(b)(2)(ii)(A), baseline condition/performance is derived from the latest data collected through the beginning date of the performance period. FHWA will classify the assessment of progress toward the achievement of an individual 2-year or 4-year target as “progress not determined” if a State provides the extenuating circumstance information required in 23 CFR 490.109(e)(5), and FHWA accepts the information.

Most recent Significant Progress Determination for the Infrastructure measures

Most Recent Significant Progress Determination for all applicable measures

Interstate Pavement in Good Condition
- Trend through 2021
  
  Desired trend: ↑
  
  Illinois % Interstate Lane Miles Good Condition
Interstate Pavement in Good Condition 2017 2018 2019 2020 2021

Condition/Performance -- 63.8 61.1 64.0 65.7

Target -- -- -- -- 61.0

Behind the data: For the first performance period only, baseline condition and 2-year targets are not required for the Pavements on the Interstate System measures.
Interstate Pavement in Good Condition
The Bureau of Programming and the Bureau of Research reviewed multiple historical reports, current data, FHWA workshop guidelines and the CFR for setting the pavement targets. The definition of wheel path changed with the final rules from prior years. The Department started collecting automated crack detection data with the 2017 pavement collection. As a result of both of these items, trend line analysis for pavement cracking percent was limited. This impacted our analysis and setting the target because the Good/Poor require a combination of items. As we move further along, we will be able to develop more consistent trend line analysis to set better targets.

N/A

GAP analysis in 2019 TAMP projects a decline in condition based on the expected revenues at the time. The revised targets reflect that trend. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. Our LRTP supports improved pavement conditions, however the current TAMP shows a continued decrease. The Rebuild Illinois Capital Program was passed which will provide additional revenue and the Department is reviewing the long range impacts of those additional funds.

N/A

The investments for the 2022 program included a strong NHS focus. 78% of the total pavement investments were focused on NHS and 7% of the total was focused on Proactive Maintenance and Preservation. The 4-year target was exceeded and additionally improved from the 2-year actual condition, demonstrating that the investment strategies were effective. IDOT had set a decreasing target. Since the actual results exceeded the target, IDOT made significant progress.
Data Sources:
Illinois 2018, 2020, 2022 Biennial Performance Report
Illinois 2019, 2020, 2021, 2022 HPMS Data Submittal

Interstate Pavement in Good Condition	2017	2018	2019	2020	2021
Condition/Performance	--	63.8	61.1	64.0	65.7
Target	--	--	--	--	61.0

Interstate Pavement in Poor Condition
- Trend through 2021
  
  Desired trend: ↓
  
  Illinois % Interstate Lane Miles in Poor Condition
Interstate Pavement in Poor Condition 2017 2018 2019 2020 2021

Condition/Performance -- 0.4 0.7 0.6 0.4

Target -- -- -- -- 2.0
Behind the data: For the first performance period only, baseline condition and 2-year targets are not required for the Pavements on the Interstate System measures.
Interstate Pavement in Poor Condition
The Bureau of Programming and the Bureau of Research reviewed multiple historical reports, current data, FHWA workshop guidelines and the CFR for setting the pavement targets. The definition of wheel path changed with the final rules from prior years. The Department started collecting automated crack detection data with the 2017 pavement collection. As a result of both of these items, trend line analysis for pavement cracking percent was limited. This impacted our analysis and setting the target because the Good/Poor require a combination of items. As we move further along, we will be able to develop more consistent trend line analysis to set better targets.

N/A

GAP analysis in 2019 TAMP projects a decline in condition based on the expected revenues at the time. The revised targets reflect that trend. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. Our LRTP supports improved pavement conditions, however the current TAMP shows a continued decrease. The Rebuild Illinois Capital Program was passed which will provide additional revenue and the Department is reviewing the long range impacts of those additional funds.

N/A

The investments for the 2022 program included a strong NHS focus. 78% of the total pavement investments were focused on NHS and 7% of the total was focused on Proactive Maintenance and Preservation. The 4-year target was exceeded and additionally improved from the 2-year actual condition, demonstrating that the investment strategies were effective. The actual 4-year condition is significantly below the FHWA required threshold of 5 percent. IDOT set a decreasing target for this performance period. Since the Actual results exceeded the target, IDOT made significant progress.
Data Sources:
Illinois 2018, 2020, 2022 Biennial Performance Report
Illinois 2019, 2020, 2021, 2022 HPMS Data Submittal

Interstate Pavement in Poor Condition	2017	2018	2019	2020	2021
Condition/Performance	--	0.4	0.7	0.6	0.4
Target	--	--	--	--	2.0

Non-Interstate National Highway System (NHS) Pavement in Good Condition (Full-distress + IRI)
- Trend through 2021
  
  Desired trend: ↑
  
  Illinois % Non-Interstate NHS Lane Miles In Good Condition

Non-Interstate National Highway System (NHS) Pavement in Good Condition (Full-distress + IRI)	2017	2018	2019	2020	2021
Condition/Performance	--	--	24.3	25.6	29.5
Target	--	--	27.0	--	21.0

Behind the data: Because Illinois State DOT has established targets based on full-distress plus IRI data, FHWA has calculated the value for Actual using full-distress plus IRI data for assessing target achievement.
Non-Interstate National Highway System (NHS) Pavement in Good Condition (Full-distress + IRI)
The Department set the targets due by 5/20/18 based on the full FHWA Pavement Criteria and are submitting the same 2 and 4 year targets based on the full FHWA Criteria for Good/Fair/Poor.
The Bureau of Programming and the Bureau of Research reviewed multiple historical reports, current data, FHWA workshop guidelines and the CFR for setting the pavement targets. The definition of wheel path changed with the final rules from prior years. The Department started collecting automated crack detection data with the 2017 pavement collection. As a result of both of these items, trend line analysis for pavement cracking percent was limited. This impacted our analysis and setting the target because the Good/Poor require a combination of items. As we move further along, we will be able to develop more consistent trend line analysis to set better targets.
2017 HPMS PRC showed Baseline Good% as 27.71% for all FHWA pavement criteria. This number was close to the Department's calculated Pavement Good % baseline. The Department set the targets due by 5/20/18 based on the full FHWA Pavement Criteria and are submitting the same 2 and 4 year targets based on the full FHWA Criteria for Good/Fair/Poor.

The Department did not meet the initial 2 year target of 27% Good. The actual 2 year condition was 24.3% Good. The lack of historical data was the main reason for not meeting the initial 2-year target. The grouping of these pavement criteria and FHWA changing the definitions of crack percentage was new during the initial target setting. As a result when the Department set the initial targets, there was limited data for analysis of trend lines to set a target. FHWA only provided a baseline for IRI, not the "Full Distress + IRI". The initial target was based on the Department's estimated baseline and our projected trend line utilizing limited historical data. The Department set targets using the "Full Distress + IRI". The Department's Transportation Asset Management Plan (TAMP) was developed, completed, and approved in August 2019. The Department will continue to follow the approved 2019 Illinois TAMP to develop its Multi-Year Program and Annual Programs. The most recent consistency review with IL FHWA Division Office showed that IDOT spent within 5% of the recent Annual Program between Planned and Actual pavement expenditures. The state also passed a new Rebuild Illinois Capital Program in 2019 that will provide additional funding.

GAP analysis in 2019 TAMP projects a decline in condition based on the expected revenues at the time. The revised targets reflect that trend. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. Our LRTP supports improved pavement conditions, however the current TAMP shows a continued decrease. The Rebuild Illinois Capital Program was passed which will provide additional revenue and the Department is reviewing the long range impacts of those additional funds.

GAP analysis in 2019 TAMP projects a decline in condition based on the expected revenues at the time. The revised targets reflect that trend. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. With the implementation of the TAMP and performance measures, the Department provides annually to the Illinois FHWA Division Office a TAMP Implementation Report. As noted in the 2020 TAMP Implementation Report, the Department was not able to report on completed projects along the TAMP or Performance guidelines during the first two years. The Department, as part of the annual report, does provide details on the planned expenditures along the TAMP categories. Our LRTP supports improved pavement conditions, however the current TAMP shows a continued decrease. The Department improved communication with NHS Local jurisdictions to provide them current data on their NHS pavements and the Department's TAMP goals and guidelines. The Rebuild Illinois Capital Program was passed which will provide additional revenue and the Department is reviewing the long range impacts of those additional funds.

The investments for the 2022 program included a strong NHS focus. 78% of the total pavement investments were focused on NHS and 7% of the total was focused on Proactive Maintenance and Preservation. The 4-year target was exceeded and additionally improved from the 2-year actual condition, demonstrating that the investment strategies were effective. IDOT had set a decreasing target. Since the actual results exceeded the target, IDOT made significant progress.
Data Sources:
Illinois 2018, 2020, 2022 Biennial Performance Report
Illinois 2020, 2021, 2022 HPMS Data Submittal

Non-Interstate National Highway System (NHS) Pavement in Good Condition (IRI Only)
- Trend through 2021
  
  Desired trend: ↑
  
  Illinois % Non-Interstate NHS Lane Miles In Good Condition
Non-Interstate National Highway System (NHS) Pavement in Good Condition (IRI Only) 2017 2018 2019 2020 2021

Condition/Performance 37.6 39.1 39.1 39.9 43.3
Behind the data: For the first performance period, FHWA has calculated the values for Baseline and Actual using International Roughness Index (IRI) only (or Present Serviceability Rating (PSR) values for road sections where speed is less than 40 mph) for assessing condition change from the baseline.
Non-Interstate National Highway System (NHS) Pavement in Good Condition (IRI Only)
See Full-distress + IRI above.

See Full-distress + IRI above.

See Full-distress + IRI above.

See Full-distress + IRI above.

See Full-distress + IRI above.
Data Sources:
Illinois 2018, 2020, 2022 Biennial Performance Report
Illinois 2018, 2019, 2020, 2021, 2022 HPMS Data Submittal

Non-Interstate National Highway System (NHS) Pavement in Good Condition (IRI Only)	2017	2018	2019	2020	2021
Condition/Performance	37.6	39.1	39.1	39.9	43.3

Non-Interstate National Highway System (NHS) Pavement in Poor Condition (Full-distress + IRI)
- Trend through 2021
  
  Desired trend: ↓
  
  Illinois % Non-Interstate NHS Lane Miles In Poor Condition

Non-Interstate National Highway System (NHS) Pavement in Poor Condition (Full-distress + IRI)	2017	2018	2019	2020	2021
Condition/Performance	--	--	8.6	9.4	8.0
Target	--	--	6.0	--	9.0

Behind the data: Because Illinois State DOT has established targets based on full-distress plus IRI data, FHWA has calculated the value for Actual using full-distress plus IRI data for assessing target achievement.
Non-Interstate National Highway System (NHS) Pavement in Poor Condition (Full-distress + IRI)
The Department set the targets due by 5/20/18 based on the full FHWA Pavement Criteria and are submitting the same 2 and 4 year targets based on the full FHWA Criteria for Good/Fair/Poor.
The Bureau of Programming and the Bureau of Research reviewed multiple historical reports, current data, FHWA workshop guidelines and the CFR for setting the pavement targets. The definition of wheel path changed with the final rules from prior years. The Department started collecting automated crack detection data with the 2017 pavement collection. As a result of both of these items, trend line analysis for pavement cracking percent was limited. This impacted our analysis and setting the target because the Good/Poor require a combination of items. As we move further along, we will be able to develop more consistent trend line analysis to set better targets.
HPMS PRC showed Baseline % Poor 4.94% for all FHWA pavement criteria. This number was close to the Department's calculated Pavement Poor% baseline. The Department set the targets due by 5/20/18 based on the full FHWA Pavement Criteria and are submitting the same 2 and 4 year targets based on the full FHWA Criteria for Good/Fair/Poor.

The Department did not meet the initial 2 year target of 6.0% Poor. The actual 2 year condition was 8.6% Poor. The lack of historical data was the main reason for not meeting the initial 2-year target. The grouping of these pavement criteria and FHWA changing the definitions of crack percentage was new during the initial target setting. As a result when the Department set the initial targets, there was limited data for analysis of trend lines to set a target. FHWA only gave a baseline for IRI, not the "Full Distress + IRI". The initial target was based on the Department's estimated baseline and our projected trend line based on limited historical data. The Department set targets using the "Full Distress + IRI". The Department's Transportation Asset Management Plan (TAMP) was developed, completed, and approved in August 2019. The Department will continue to follow the approved 2019 Illinois TAMP to develop its Multi-Year Program and Annual Programs. The most recent consistency review with IL FHWA Division Office showed that IDOT spent within 5% of the recent Annual Program between Planned and Actual pavement expenditures. The state also passed a new Rebuild Illinois Capital Program in 2019 that will provide additional funding.

GAP analysis in 2019 TAMP projects a decline in condition based on the expected revenues at the time. The revised targets reflect that trend. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. Our LRTP supports improved pavement conditions, however the current TAMP shows a continued decrease. The Rebuild Illinois Capital Program was passed which will provide additional revenue and the Department is reviewing the long range impacts of those additional funds.

GAP analysis in 2019 TAMP projects a decline in condition based on the expected revenues at the time. The revised targets reflect that trend. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. With the implementation of the TAMP and performance measures, the Department provides annually to the Illinois FHWA Division Office a TAMP Implementation Report. As noted in the 2020 TAMP Implementation Report, the Department was not able to report on completed projects along the TAMP or Performance guidelines during the first two years. The Department, as part of the annual report, does provide details on the planned expenditures along the TAMP categories. Our LRTP supports improved pavement conditions, however the current TAMP shows a continued decrease. The Department improved communication with NHS Local jurisdictions to provide them current data on their NHS pavements and the Department's TAMP goals and guidelines. The Rebuild Illinois Capital Program was passed which will provide additional revenue and the Department is reviewing the long range impacts of those additional funds.

The investments for the 2022 program included a strong NHS focus. 78% of the total pavement investments were focused on NHS and 7% of the total was focused on Proactive Maintenance and Preservation. The 4-year target was exceeded and additionally improved from the 2-year actual condition, demonstrating that the investment strategies were effective. IDOT had set a decreasing target. Since the actual results exceeded the target, IDOT made significant progress.
Data Sources:
Illinois 2018, 2020, 2022 Biennial Performance Report
Illinois 2020, 2021, 2022 HPMS Data Submittal

Non-Interstate National Highway System (NHS) Pavement in Poor Condition (IRI Only)
- Trend through 2021
  
  Desired trend: ↓
  
  Illinois % Non-Interstate NHS Lane Miles In Poor Condition
Non-Interstate National Highway System (NHS) Pavement in Poor Condition (IRI Only) 2017 2018 2019 2020 2021

Condition/Performance 19.4 19.7 19.4 19.5 18.6
Behind the data: For the first performance period, FHWA has calculated the values for Baseline and Actual using International Roughness Index (IRI) only (or Present Serviceability Rating (PSR) values for road sections where speed is less than 40 mph) for assessing condition change from the baseline.
Non-Interstate National Highway System (NHS) Pavement in Poor Condition (IRI Only)
See Full-distress + IRI above.

See Full-distress + IRI above.

See Full-distress + IRI above.

See Full-distress + IRI above.

See Full-distress + IRI above.
Data Sources:
Illinois 2018, 2020, 2022 Biennial Performance Report
Illinois 2018, 2019, 2020, 2021, 2022 HPMS Data Submittal

Non-Interstate National Highway System (NHS) Pavement in Poor Condition (IRI Only)	2017	2018	2019	2020	2021
Condition/Performance	19.4	19.7	19.4	19.5	18.6

National Highway System (NHS) Bridges in Good Condition
- Trend through 2021
  
  Desired trend: ↑
  
  Illinois % Deck Area in Good Condition on NHS Bridges

National Highway System (NHS) Bridges in Good Condition	2017	2018	2019	2020	2021
Condition/Performance	29.1	28.1	26.2	23.7	22.8
Target	--	--	28.0	--	23.5

National Highway System (NHS) Bridges in Good Condition
Bureau of Bridges and Bureau of Programming reviewed the FHWA Bridge Criteria. There were very few changes with the Performance Measures criteria from prior years classification of Structurally Deficient bridges. As a result, a review was completed of prior years’ NBI submittals to develop trends. Overall, the consensus was that with the beginning of the implementation of an Asset Management approach, we believe in the long term that we will see a leveling of the decreasing trends in our Bridge conditions. There is also consensus among the group that additional funding will be needed to improve the trends due to the large number of bridges nearing end of service life and the large amount that are currently in Poor condition. IDOT is currently in the penalty phase of the Bridge Performance Measure.

The Department did not meet the initial 2 year target of 28.0% Good.. The actual 2-year condition was 26.2% Good. The initial target was based on the Department's estimated baseline and our projected trend line. About 13% of state structures built before 1950, 30% were built in the 50’s and 60’s, and another 13% were built in the 70’s. As this huge wave of structures moves through the cycle we are seeing the impacts on our system and the trend lines. As noted in the 2019 TAMP the Department did not have sufficient funding in place to maintain the current system. Due to the age and funding, the actual performance was below our initial target.
The Department will continue to follow the approved 2019 Illinois TAMP to develop its Multi-Year Program and Annual Programs. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. The state also passed a new Rebuild Illinois Capital Program in 2019 that will provide additional funding.

GAP analysis in 2019 TAMP projects a decline in condition based on the expected revenues at the time. The revised targets reflect that trend. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. Our LRTP supports improved structure conditions, however the current TAMP shows a continued decrease. The Rebuild Illinois Capital Program was passed which will provide additional revenue and the Department is reviewing the long range impacts of those additional funds.

GAP analysis in 2019 TAMP projects a decline in condition based on the expected revenues at the time. The revised targets reflect that trend. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. With structures this delay in updated data can be substantially longer due to construction spanning several construction seasons. With the implementation of the TAMP and performance measures, the Department provides annually to the Illinois FHWA Division Office a TAMP Implementation Report. As noted in the 2020 TAMP Implementation Report, the Department was not able to report on completed projects along the TAMP or Performance guidelines during the first two years. The Department, as part of the annual report, does provide details on the planned expenditures along the TAMP categories. Our LRTP supports improved structure conditions, however the current TAMP shows a continued decrease. The Department improved communication with NHS Local jurisdictions to provide them current data on their NHS structures and the Department's TAMP goals and guidelines. The State passed Rebuild Illinois Capital Program which will provide additional revenue and the Department is reviewing the long range impacts of those additional funds. .

The 4-year target was not met. The investments for the 2022 program included a strong NHS focus. 73% of the total structure investments were focused on NHS and 24% of the total was focused on Proactive Maintenance and Preservation. The percentage of Good bridges is primarily improved by structure replacement. That is the only option that increases all component ratings to a 7 or greater. Other treatements may improve a component to 7 or greater, but the other NBI components could remain in the Fair category of 5 or 6, resulting the overall rating being Fair not Good. Because replacing bridges is very costly and has such a long lead time from programming through design, construction, final inspection, and reporting, it may be years before that metric begins to improve in Illinois. It is anticipated the rate of decrease of percentage of bridges from Good to Fair condition will be slowed by the increased preservation strategies that IDOT has implemented. IDOT set a decreasing target for the 2022 performance report period. Since the actual results were below the target, IDOT did not make significant progress.
Data Sources:
Illinois 2018, 2020, 2022 Biennial Performance Report
Illinois 2018, 2019, 2020, 2021, 2022 NBI Data Submittal

National Highway System (NHS) Bridges in Poor Condition
- Trend through 2021
  
  Desired trend: ↓
  
  Illinois % Deck Area in Poor Condition on NHS Bridges

National Highway System (NHS) Bridges in Poor Condition	2017	2018	2019	2020	2021
Condition/Performance	11.6	13.7	13.3	13.3	12.4
Target	--	--	13.0	--	15.5

National Highway System (NHS) Bridges in Poor Condition
Bureau of Bridges and Bureau of Programming reviewed the FHWA Bridge Criteria. There were very few changes with the Performance Measures criteria from prior years classification of Structurally Deficient bridges. As a result, a review was completed of prior years’ NBI submittals to develop trends. Overall, the consensus was that with the beginning of the implementation of an Asset Management approach, we believe in the long term that we will see a leveling of the decreasing trends in our Bridge conditions. There is also consensus among the group that additional funding will be needed to improve the trends due to the large number of bridges nearing end of service life and the large amount that are currently in Poor condition. IDOT is currently in the penalty phase of the Bridge Performance Measure.

The Department did not meet the initial 2 year target of 13.0% Poor. The actual 2 year condition was 13.3% Poor. The initial target was based on the Department's estimated baseline and our projected trend line. About 13% of state structures built before 1950, 30% were built in the 50’s and 60’s, and another 13% were built in the 70’s. As this huge wave of structures moves through the cycle we are seeing the impacts on our system and the trend lines. As noted in the 2019 TAMP the Department did not have sufficient funding in place to maintain the current system. Due to the age and funding, the actual performance was below our initial target.
The Department will continue to follow the approved 2019 Illinois TAMP to develop its Multi-Year Program and Annual Programs. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. The state also passed a new Rebuild Illinois Capital Program in 2019 that will provide additional funding.

GAP analysis in 2019 TAMP projects a decline in condition based on the expected revenues at the time. The revised targets reflect that trend. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. Our LRTP supports improved structure conditions, however the current TAMP shows a continued decrease. The State passed Rebuild Illinois Capital Program which will provide additional revenue and the Department is reviewing the long range impacts of those additional funds.

GAP analysis in 2019 TAMP projects a decline in condition based on the expected revenues at the time. The revised targets reflect that trend. With the implementation of any program, there is a delay from the letting, to award, to contract, to construction, to remeasurement, and to ultimately reporting of new data. Due to this inherent delay, the changes made of implementing the TAMP will take several years before we see changes in the trend lines and our performance numbers. With structures this delay in updated data can be substantially longer due to construction spanning several construction seasons. With the implementation of the TAMP and performance measures, the Department provides annually to the Illinois FHWA Division Office a TAMP Implementation Report. As noted in the 2020 TAMP Implementation Report, the Department was not able to report on completed projects along the TAMP or Performance guidelines during the first two years. The Department, as part of the annual report, does provide details on the planned expenditures along the TAMP categories. Our LRTP supports improved structure conditions, however the current TAMP shows a continued decrease. The Department improved communication with NHS Local jurisdictions to provide them current data on their NHS structures and the Department's TAMP goals and guidelines. The State passed Rebuild Illinois Capital Program which will provide additional revenue and the Department is reviewing the long range impacts of those additional funds. .

The investments for the 2022 program included a strong NHS focus. 73% of the total structure investments were focused on NHS and 24% of the total was focused on Proactive Maintenance and Preservation. The 4-year target was exceeded and additionally improved from the 2-year actual condition, demonstrating that the investment strategies were effective. The Structure Poor target was met, demonstrating the effectiveness of the investment strategies. IDOT set a decreasing target for this performance period. Since the actual results exceeded the target, IDOT made significant progress.
Data Sources:
Illinois 2018, 2020, 2022 Biennial Performance Report
Illinois 2018, 2019, 2020, 2021, 2022 NBI Data Submittal

Significant Progress Determination

This table shows FHWA’s most recent determination for the Infrastructure performance measures.

PLEASE NOTE: Each State’s performance target assessment is based on its own State-specific target methodology and program philosophy. Therefore, conclusions should not be drawn based only on the information in the Significant Progress Determination Results table. FHWA understands that each State’s program is unique and therefore does not prescribe a methodology for States to set targets. States have the flexibility to use the methodology they deem most appropriate when setting their performance targets.

Illinois 2022 Full Performance Period Significant Progress Determination Results
Measure Area	Measures		Baseline	Target	Actual	Better than Baseline?	Achieved Target?	Made Significant Progress?	Consequences [23 CFR 490.109(f)]
The condition of pavements on the Interstate System	Percentage of pavements of the Interstate System in Good condition		61.1¹	61.0	65.7	Yes	Yes	Yes	None
The condition of pavements on the Interstate System	Percentage of pavements of the Interstate System in Poor condition		0.7²	2.0	0.4	Yes	Yes	Yes	None
The condition of pavements on the National Highway System (NHS) (excluding the Interstate)	Percentage of pavements of the non-Interstate NHS in Good condition	Based only on IRI	37.6	---	43.3	Yes	---	Yes	None
		Based on Full Distress + IRI	---	21.0	29.5	---	Yes	Yes
	Percentage of pavements of the non-Interstate NHS in Poor condition	Based only on IRI	19.4	---	18.6	Yes	---	Yes
		Based on Full Distress + IRI	---	9.0	8.0	---	Yes	Yes
The condition of bridges on the National Highway System	Percentage of NHS bridges classified as in Good condition		29.1	23.5	22.8	No	No	No	Additional Reporting
The condition of bridges on the National Highway System	Percentage of NHS bridges classified as in Poor condition		11.6	15.5	12.4	No	Yes	Yes	Additional Reporting

¹ The 2-year condition/performance, in 2020 Mid Performance Period Progress Report, as the baseline condition/performance, as required in 23 CFR 490.105(e)(7)(iii).
² Ibid.

Transportation Performance Management