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Arrow Iowa Demonstration Project: Improvements to the 24th Street–I-29/80 Interchange in Council Bluffs

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Appendix

The figures and tables in this appendix document the results of the user satisfaction survey conducted by the Iowa Department of Transportation.

A postconstruction survey was sent to residences and businesses near the 24th Street interchange via electronic format. The survey not only addressed user satisfaction, but also sought to determine the best methods for communicating project information, such as lane configuration and project updates.

Table 6. Level of use of the 24th Street bridge during construction.
Rate your level of use of the 24th Street bridge during construction.
Answer Options Response Percent Response Count
All the time 12.5% 3
Frequent 29.2% 7
Moderate 25.0% 6
Occasional 33.3% 8
Never 0.0% 0
Answered question 24
Skipped question 3
Pie Chart: Rate your level of use of the 24th Street bridge during construction?

Figure 23. Level of use of the 24th Street bridge during construction.

Table 7. User demographics.
How would you best describe yourself? (Check all that apply.)
Answer Options Response Percent Response Count
I own a business close to the project. 0.0% 0
I work at a business close to the project. 11.1% 3
I live close to the project. 25.9% 7
I regularly visit a business near the project. 37.0% 10
I often travel close to or visit areas near the project. 70.4% 19
I typically use 24th Street to get somewhere else. 29.6% 8
I don't typically drive near the 24th Street project. 3.7% 1
Answered question 27
Skipped question 0
Graph: User demographics

Figure 24. User demographics.

Table 8. User response to the importance of the project and how well it was executed.
Rate how important you believe each approach is and how well it was carried out on this project.
Importance
Answer Options Important Somewhat Important Somewhat Unimportant Unimportant Response Count
–Keeping 24th Street open during construction 15 5 0 1 21
–Providing signage for businesses in the area 13 7 2 0 22
–Condensing project from 2 years down to 1 21 1 0 0 22
–Using stronger materials to extend bridge life and reduce future disruptions for maintenance 21 1 0 0 22
–Using prefabricated components to speed construction 18 4 0 0 22
–Using multiple methods (message signs, radio, texts, etc.) to advise motorists of construction and alternative routes 20 1 1 0 22
How well
Answer Options Very Good Good Poor Very Poor Response Count
–Keeping 24th Street open during construction 6 13 2 0 21
–Providing signage for businesses in the area 4 14 4 0 22
–Condensing project from 2 years down to 1 13 9 0 0 22
–Using stronger materials to extend bridge life and reduce future disruptions for maintenance 12 8 0 0 20
–Using prefabricated components to speed construction 8 11 1 0 20
–Using multiple methods (message signs, radio, texts, etc.) to advise motorists of construction and alternative routes 7 8 4 3 22
Question Totals
Comments 2
Answered question 22
Skipped question 5
Table 9. User response to keeping 24th Street open to traffic.
Knowing it would mean traffic delays and driving through construction areas, how important was it to keep 24th Street open during construction?
Answer Options Response Percent Response Count
Important 66.7% 14
Somewhat important 23.8% 5
Somewhat unimportant 4.8% 1
Unimportant 4.8% 1
Answered question 21
Skipped question 6
Pie Chart: Knowing it would mean traffic delays and driving through construction areas, how important was it to keep 24th Street open during construction?

Figure 25. User response to keeping 24th Street open to traffic.

Table 10. Response to how well the Iowa DOT kept users informed about construction work.
How satisfied are you with the way the Iowa DOT kept you informed about the construction work?
Answer Options Response Percent Response Count
Satisfied 50.0% 11
Somewhat satisfied 31.8% 7
Somewhat dissatisfied 18.2% 4
Dissatisfied 0.0% 0
Answered question 22
Skipped question 5
Pie Chart: How satisfied are you with the way the Iowa DOT kept you informed about the construction work?

Figure 26. Response to how well the Iowa DOT kept users informed about construction work.

Table 11. Forms of communication used most often.
What means of communication do you USE MOST OFTEN to learn about traffic issues/road information?
Answer Options Response Percent Response Count
Radio 57.1% 12
Web sites 52.4% 11
Text messages 9.5% 2
E–Alerts 52.4% 11
Changeable message signs 57.1% 12
Other (please specify) 5
Answered question 21
Skipped question 6
Number Response Date Other (please specify)
1 Sept. 24, 2009 8:32 p.m. Word of mouth
2 Sept. 25, 2009 1:02 a.m. Local newspapers
3 Sept. 25, 2009 1:47 a.m. Television newscasts
4 Oct. 2, 2009 8:30 p.m. TV
5 Oct. 5, 2009 8:43 p.m. If there are changeable message signs, they should have Web site info for more details. Alternatively, just a regular sign with the Web site (to sign up for e–mail updates) would be great!
Graph: What means of communication do you USE Most OFTEN to learn about traffic issues/roads information?

Figure 27. Forms of communication used most often.

Table 12. Best methods to keep users informed about traffic and construction issues.
What are the BEST METHODS to keep you informed regarding traffic issues/road construction?
Answer Options Response Percent Response Count
Radio 59.1% 13
Web sites 36.4% 8
Text messages 22.7% 5
E–Alerts 59.1% 13
Changeable message signs 63.6% 14
Other (please specify) 3
Answered question 22
Skipped question 5
Number Response Date Other (please specify)
1 Sept. 25, 2009 1:47 a.m. Television newscasts and alerts  
2 Oct. 2, 2009 8:30 p.m. TV helps
3 Oct. 5, 2009 8:43 p.m. If there are changeable message signs, they should have Web site info for more details. Alternatively, just a regular sign with the Web site (to sign up for e–mail updates) would be great!
What are the Best Methods to keep you informed regarding traffic issues/road construction?

Figure 28. Best methods to keep users informed about traffic and construction issues.

Table 13. User rating of the finished project.
Rate the following aspects of the new 24th Street bridge and surrounding areas as compared to its previous condition.
Answer Options Much Better Better Unchanged Worse Much Worse Response Count
Lane width 17 5 0 0 0 22
Visibility 13 9 0 0 0 22
Signage 4 13 5 0 0 22
Lighting 8 12 2 0 0 22
Turn lanes 14 8 0 0 0 22
Aesthetics (appearance) 14 5 2 0 0 21
Other (please specify) 3
Answered question 22
Skipped question 5
Number Response Date Other (please specify)
1 Sept. 24, 2009
6:19 p.m.
The middle lane where I–29 and I–80 merge is not set up very well. Two lanes moving into one with people going 60 miles per hour is probably going to create an accident at some point.
2 Sept. 24, 2009
8:12 p.m.
The project is still quite unkempt underneath the 24th Street bridge adjacent to the traffic lanes, very unattractive, presents negative image of the state and area for through–traffic visitors. Aesthetic lighting on bridge still needs work.
3 Oct. 5, 2009 8:47 p.m. The I–80 west bound offramp to southbound on 24th Street needs the dotted lines for turn lanes. It is common for the left–most vehicle to get "pinched off" at median of 24th Street. The dotted lines would help keep the #2 lane vehicles from doing this.
Graph: Rate the following aspects of the new 24th Streent bridge and surrounding areas as compared to its previous condition

Figure 29. User rating of the finished project.

Table 14. User rating of the project amenities.
The 24th Street bridge project was designed to increase safety and improve mobility. Which of the following changes do you believe were most important in achieving these goals?
Answer Options Important Somewhat important Somewhat unimportant Unimportant Response Count
–Additional turn lanes 20 2 0 0 22
–Bike/pedes–trian path on both sides of the bridge 13 6 2 1 22
–Additional through lanes 19 2 0 0 21
–Aesthetic features 5 14 2 1 22
–Other (please specify) 1
Answered question 22
Skipped question 5
Number Response Date Other (please specify)
1 Oct. 5, 2009
8:47 p.m.
The I–80 westbound offramp to southbound on 24th Street needs the dotted lines in the intersection for turn lanes. It is common for the left–most vehicle to get "pinched off" at the 24th Street median. The dotted lines would help keep the #2 lane vehicles from doing this.
Graph: How satisfied are you with the way the Iowa DOT kept you informed about the constuction work?

Figure 30. User rating of the project amenities.

Table 15. Level of inconvenience experienced by the user.
Rate the level of inconvenience you experienced as a user of the 24th Street bridge during its construction.
Answer Options Response Percent Response Count
Minimal 28.6% 6
Moderate 66.7% 14
Serious 4.8% 1
Answered question 21
Skipped question 6
Graph: Rate the level of inconvenience you experienced as a user of the 24th Street bridge during its construction

Figure 31. Level of inconvenience experienced by the user.

Table 16. Impact on local businesses.
Did construction on the 24th Street bridge deter you from visiting local businesses in the area?
Answer Options Response Percent Response Count
Yes 27.3% 6
No 72.7% 16
If yes, please specify. 4
Answered question 22
Skipped question 5
Number Response Date If yes, please specify.
1 Sept. 24, 2009 6:09 p.m. I frequently used an alternate route to visit the Star Cinema and Bass Pro Shop. I did choose not to use the Camping World location as it would have required driving through the site with a large travel trailer in tow.
2 Sept. 24, 2009 8:13 p.m. I would take an alternate route to avoid the construction area.
3 Sept. 25, 2009 4:19 p.m. I would not visit those areas if I didn't have to go to work and I avoided the businesses that were there as I found other solutions for fuel, etc., due to the lane changes and making turns through construction zones.
4 Sept. 30, 2009 12:50 a.m. Congestion on the exit ramps from interstate affected decision for visiting businesses in the area. Now that it is done, I have nothing but praise for the results of the construction.
Grapth: Did construction on the 24th Street bridge deter you from visiting local business in the area?

Figure 32. Impact on local businesses.

Table 17. Safety issues.
Were there any safety issues/concerns raised during the 24th Street project?
Answer Options Response Percent Response Count
Yes 9.5% 2
No 90.5% 19
If yes, were they dealt with appropriately? How could they be handled better in the future? 2
Answered question 21
Skipped question 6
Number Response Date If yes, were they dealt with appropriately? How could they be handled better in the future?
1 Sept. 25, 2009 1:50 a.m. Giving all the semi's room for traveling, light timing was terrible.
2 Oct. 5, 2009 8:48 p.m. Backups into the intersections due to poor stoplight timing/design. (described in other response)
Graph: Were there any safety issues/concens raised during the 24th Street project?

Figure 33. Safety issues.

Table 18. User–perceived importance of design and scheduling.
Rate the importance in regard to designing and scheduling projects.
Answer Options Very important Important Unimportant Very Unimportant Response Count
–Keeping a road/bridge open– allow restricted traffic, increase cost and time 7 8 4 1 20
–Closing a road/bridge–no traffic, reduce cost and time 4 10 5 1 20
–Extending the life of the road/bridge– more initial cost but less life cycle cost 17 4 0 0 21
–Reducing future maintenance needs–more initial cost but fewer disruptions 16 4 0 0 20
–Reducing time to complete a project through the use of incentives to contractors 12 5 0 1 18
–Reducing time to complete a project through design/material selection 15 4 0 0 19
–Creation of alternative routes while project is underway 12 5 3 0 20
–Use of multiple methods (technology) to inform the public of work zone conditions 17 2 1 0 20
–Other (please specify) 1
Answered question 21
Skipped question 6
Number Re–sponse Date Other (please specify)
1 Oct. 5, 2009 8:50 p.m. A sign with a Web site to sign up for e–mail updates would be extremely helpful for those that often use an intersection or roadway that is under construction.
Graph: Rate the importance in regard to designing and scheduling project

Figure 34. User–perceived importance of design and scheduling.

Flyer: Highways for LIFE Project Showcase

Figure 35. Showcase brochure.

Table 19. Showcase agenda: September 25, 2008.
Time Session/Topic Speakers
8:30–9:00 a.m. Registration
9:00–9:15 a.m. Welcome and Introductions John Selmer, District 4 Engineer
9:15–9:45 a.m. Highways for LIFE Program Overview Joe Jurasic, FHWA IA Construction/Transportation Engineer
9:45–10:00 a.m. IDOT’s Project Management Team Process/HfL Steering Committee–
“Seeking Best Solutions”
Sandra Larson, IDOT
10:00–10:30 a.m. IDOT’s HfL Project Overview
  • Project Goals
  • Project Development Process
  • Innovative Contracting (A+B bidding)
  • Public Communications/Outreach
George Feazell, IDOT
10:30–10:45 a.m. BREAK
10:45–11:30 a.m. IDOT’s Project Overview and Perspective
  • Project Description Details
  • Full–Depth Precast Panels and SCC
  • HPS/HPC
  • Structural Health Monitoring
  • Flooded Backfill
Jim Nelson, IDOT
11:30–11:50 a.m. Contractor’s Project Perspective Robert Cramer
11:50 a.m.–12:10 p.m. Q&A for Panel
12:10–1:00 p.m. LUNCH
1:00–1:15 p.m. Project Tour
1:15–2:30 p.m. View Project
2:30–2:45 p.m. Trip to Conference Center
2:45–3:15 p.m. Q&A to Panel and Wrapup

Showcase Speakers List

John Carns
Iowa Department of Transportation
2210 E. 7th Street
Atlantic, IA 50022
Telephone: 712–243–7639
E–mail: john.carns@dot.iowa.gov

Robert Cramer
Cramer and Associates
5600 Brookside Drive
Grimes, IA
Telephone: 515–265–1447
Eemail: rcramer@cramerandassociatesinc.com

George Feazell
Iowa Department of Transportation
2210 E. 7th Street
Atlantic, IA 50022
Telephone: 712–243–7628
Email: george.feazell@dot.iowa.gov

Joseph Jurasic
FHWA Iowa Division
105 6th Street
Ames, IA 50010
Telephone: 515–233–7304
Email: joe.jurasic@dot.gov

Norman McDonald
Iowa Department of Transportation
800 Lincoln Way
Ames, IA 50010
Telephone: 515–239–1206
E–mail: norman.mcdonald@dot.iowa.gov

Jim Nelson
Iowa Department of Transportation
800 Lincoln Way
Ames, IA 50010
Telephone: 515–233–7723
Eemail james.s.nelson@dot.iowa.gov

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Mary Huie
Highways for LIFE
202-366-3039
mary.huie@dot.gov


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