An Initial Assessment of Freight Bottlenecks on Highways - Appendix A

Appendix A

Highway Interchange Bottlenecks

A.1 Location of Highway Interchange Bottlenecks for Trucks

Figure A.1 shows the location of highway interchange bottlenecks for trucks. The bottleneck locations are indicated by a solid dot. Most are located on urban Interstate interchanges. The size of the open circles accompanying each dot indicate the relative annual truck hours of delay associated with the bottleneck.

Figure A.1 Interchange Capacity Bottlenecks on Freeways Used as Urban Truck Corridors

Map of the continental United States showing the interstate highway system as a network. Highway interchange bottlenecks are indicated by a solid dot, with open circles sized to indicate the truck hours of delay on an annual basis. Population centers along the East coast, in the Midwest, and on the West coast states account for the majority of bottlenecks for trucks.

Source: Cambridge Systematics, Inc.

A.2 Listing of Highway Interchange Bottlenecks for Trucks

This section presents six tables. Tables A.1, A.2, and A.3 list the top 25 highway interchange bottlenecks, ranking them in descending order of annual truck hours of delay for "all trucks" (Table A.1); for "large trucks making longer-distance trips" (i.e., "FAF Trucks") (Table A.2); and for "large trucks making longer-distance trips ("FAF trucks") greater than 500 miles" (Table A.3).

Table A.4 combines the top 25 highway interchange bottlenecks from each of the preceding tables and ranks them in descending order of annual truck hours of delay for "large trucks making longer distance trips (i.e., "FAF trucks") greater than 500 miles."

Table A.5 lists all the highway interchange bottlenecks for trucks identified in the scan, ranking them in descending order of annual truck hours of delay for "all trucks."

Finally, for comparison, Table A.6 lists the top 25 most congested highway interchanges as identified in the American Highway Users Alliance study. These bottlenecks are ranked in descending order of annual hours of delay for all vehicles, including trucks.

The bottleneck ranking in Tables A.1 to A.5 are summarized below.

Table Number	Bottlenecks	Ranked in Descending Order of Annual Truck Hours of Delay for …
Table A.1	Top 25	All Trucks
Table A.2	Top 25	Large Trucks Making Longer Distance Trips ("FAF Trucks")
Table A.3	Top 25	Large Trucks Making Longer Distance Trips ("FAF Trucks") Greater Than 500 Miles
Table A.4	All top-ranked bottlenecks as identified in Tables 6.1, 6.2, and 6.3, eliminating duplicate listings	Large Trucks Making Longer Distance Trips ("FAF Trucks") Greater Than 500 Miles
Table A.5	All	All Trucks

The data in the tables and their sources, by column heading, are as follows.

Bottleneck

Location. The names of the interchange routes and local nickname of the interchange as identified by the state departments of transportation, Cambridge Systematics, and Battelle.
Urban Area. The name of the urban area in which the interchange is located as identified in the FHWA 2002 HPMS database.
Critically Congested Route Number. The route number of the critically congested highway section in the interchange as identified by Cambridge Systematics and Battelle from HPMS database and state department of transportation maps. The scan identified only the critically congested roadway and the corresponding two-way truck traffic volumes on that roadway. The delay estimation methodology calculates delay resulting from queuing on the critically congested roadway and adjacent highway sections; however, it does not calculate delay on the other roadway at the interchange. This means that hours of delay are calculated on only one of the two intersecting highways or two of the four legs on a interchange, potentially underreporting total delay at the interchange.
Number of Lanes. The number of traffic lanes as reported in the 2002 HPMS database.

All Vehicles

AADT. The number of vehicles, including automobiles and trucks of all sizes, traveling the critically congested roadway each day. Annual Average Daily Traffic as reported in the 2002 HPMS database and extrapolated to 2004.
Daily Minutes of Delay per Vehicle. The number of minutes each vehicle is delayed each day by congestion at the bottleneck. Daily Minutes of Delay per Vehicle for All Vehicles as estimated by Cambridge Systematics.

All Trucks

AADTT. The number of trucks of all sizes traveling the critically congested roadway each day. Annual Average Daily Truck Traffic (i.e., number of trucks per day on the critically congested roadway) as provided by Battelle from the FHWA Freight Analysis Framework database, based on HPMS data and state department of transportation vehicle counts. Extrapolated to 2004.
Percent of All Vehicles. The number of trucks as a percentage of all vehicles. All Trucks as a percentage of All Vehicles (AADTT divided by AADT).
Annual Hours of Delay for All Trucks. The number of hours of delay accruing annually to all trucks delayed by congestion at the bottleneck. Daily Minutes of Delay per Vehicle multiplied by 2004 AADTT for All Trucks.

Large Trucks Making Longer Distance Trips (i.e., "FAF Trucks")

AADTT (Large Trucks…). The estimated number of large freight trucks—assumed to be primarily five-axle tractor-semitrailers—traveling the critically congested roadway each day. Annual Average Daily Truck Traffic of Large Trucks Making Longer Distance Trips (i.e., "FAF Trucks") calculated by multiplying AADTT for All Trucks by the estimated percentage of Large Trucks Making Longer Distance Trips (i.e., "FAF Trucks").
Percent of All Trucks. The number of large freight trucks as a percentage of all trucks. Large Trucks Making Longer Distance Trips (i.e., "FAF Trucks") as a percent of All Trucks as estimated by Cambridge Systematics based on FHWA Freight Analysis Framework data developed by Battelle. Percentages are for the urbanized area and may over- or underestimate the actual number of Large Trucks Making Longer Distance Trips (i.e., "FAF Trucks") for a specific roadway.
Annual Hours of Delay… Large Trucks…. The number of hours of delay accruing annually to large freight trucks delayed by congestion at the bottleneck. Daily Minutes of Delay per Vehicle multiplied by AADTT for Large Trucks Making Longer Distance Trips (i.e., "FAF Trucks").
Annual Commodity Tons… Large Trucks…. The approximate tonnage of the cargo carried by large freight trucks delayed by congestion at the bottleneck. AADTT (Large Trucks…) multiplied by approximate commodity tons per truck provided by Battelle from the FHWA Freight Analysis Framework database.
Annual Commodity Value… Large Trucks…. The approximate value of the cargo carried by large freight trucks delayed by congestion at the bottleneck. AADTT (Large Trucks…) multiplied by approximate commodity value per truck provided by Battelle from the FHWA Freight Analysis Framework database.
Percent Trips… Greater Than 500 Miles. The number of large freight trucks traveling more than 500 miles as a percentage of all large freight trucks; a proxy for long-haul "transcontinental" truck trips. Large Trucks Making Longer Distance Trips (i.e., "FAF Trucks") Greater Than 500 Miles as a percent of AADTT (Large Trucks…) as estimated by Cambridge Systematics based on FHWA Freight Analysis Framework data developed by Battelle. Percentages are for the urbanized area and may over- or underestimate the actual number of Large Trucks Making Longer Distance Trips (i.e., "FAF Trucks") Greater Than 500 Miles for a specific roadway.
Annual Hours of Delay… Greater Than 500 Miles. The number of hours of delay accruing annually to large freight trucks traveling more than 500 miles delayed by congestion at the bottleneck. Daily Minutes of Delay per Vehicle multiplied by AADTT (Large Trucks…) multiplied by Percent Trips Greater Than 500 Miles.

Table A.1 Top 25 Highway Interchange Bottlenecks for Trucks
*Ranked By Annual Hours of Delay for All Trucks*
Bottleneck				All Vehicles-2004		All Trucks-2004			"Large Trucks Making Longer Distance Trips"-2004
Location	Urban Area	Critically Congested Route No.	No. of Lanes	AADT	Daily Minutes of Delay per Vehicle	AADTT	Percent of All Vehicles	Annual Hours of Delay All Trucks	All Trips					Trips Greater Than 500 Miles
Location	Urban Area	Critically Congested Route No.	No. of Lanes	AADT	Daily Minutes of Delay per Vehicle	AADTT	Percent of All Vehicles	Annual Hours of Delay All Trucks	AADTT	Percent of All Trucks	Annual Hours of Delay	Annual Commodity Tons	Annual Commodity Value	Percent of Large Truck Trips	Annual Hours of Delay
I-90 @ I-290	Buffalo-Niagara Falls	90	4	136,500	8.3	33,100	24%	1,661,900	7,300	22%	367,000	2,632,500	$2,968,000	58%	212,900
I-285 @ I-85 Interchange ("Spaghetti Junction")	Atlanta	285	8	265,300	10.0	27,100	10%	1,641,200	7,800	29%	472,600	2,943,700	$3,262,000	52%	245,800
I-17 (Black Canyon Fwy): I-10 Interchange (the "Stack") to Cactus	Phoenix	17	6	217,300	9.2	28,900	13%	1,608,500	9,000	31%	501,600	3,326,700	$3,792,000	48%	240,800
I-90/94 @ I-290 Interchange ("Circle Interchange")	Chicago-Northwestern IN	90	8	305,800	9.7	26,300	9%	1,544,900	9,200	35%	540,400	3,718,000	$4,218,000	53%	286,400
San Bernardino Fwy	Los Angeles	10	8	268,700	7.2	34,900	13%	1,522,800	11,200	32%	488,700	4,094,500	$4,780,000	31%	151,500
I-94 (Dan Ryan Expwy) @ I-90 Skyway Split (Southside)	Chicago-Northwestern IN	94	8	271,700	7.9	31,600	12%	1,512,900	11,100	35%	531,500	4,485,900	$5,089,000	53%	281,700
I-285 @ I-75 Interchange	Atlanta	285	6	226,300	9.6	25,700	11%	1,497,300	7,400	29%	431,500	2,792,800	$3,095,000	52%	224,400
SR 134 @ SR 2 Interchange	Los Angeles	134	8	247,900	8.3	29,600	12%	1,489,400	9,500	32%	477,500	3,473,000	$4,054,000	31%	148,000
I-77 @ Tryon Rd	Charlotte	77	6	170,500	8.3	29,600	17%	1,487,100	7,300	25%	367,000	2,700,200	$2,983,000	45%	165,200
Long Beach Fwy	Los Angeles	710	8	246,100	8.3	27,500	11%	1,380,300	8,800	32%	442,400	3,217,100	$3,756,000	31%	137,100
I-20 @ I-285 Interchange	Atlanta	20	6	187,200	8.3	27,000	14%	1,359,400	7,800	29%	392,100	2,943,700	$3,262,000	52%	203,900
I-80/I-94 split (Southside)	Chicago-Northwestern IN	80	4	139,600	8.6	25,600	18%	1,343,600	9,000	35%	472,400	3,637,200	$4,127,000	53%	250,400
SR 60 @ I-605 Interchange	Los Angeles	60	8	233,000	8.3	26,100	11%	1,314,200	8,400	32%	422,300	3,070,900	$3,585,000	31%	130,900
Pulaski Rd @ I-55	Chicago-Northwestern IN	55	6	197,200	7.5	28,700	15%	1,300,400	10,000	35%	453,700	4,041,300	$4,585,000	53%	240,500
I-75 @ I-85 Interchange	Atlanta	75	10	339,600	9.1	23,400	7%	1,288,800	6,800	29%	374,900	2,566,300	$2,844,000	52%	194,900
I-93 @ I-95 Interchange	Boston	93	6	188,400	8.3	25,500	14%	1,280,100	2,800	11%	140,800	1,020,000	$1,220,000	36%	50,700
I-290 @ I-355	Chicago-Northwestern IN	290	6	223,100	8.3	24,800	11%	1,246,200	8,700	35%	437,300	3,515,900	$3,989,000	53%	231,800
I-405 (San Diego Fwy) @ I-605 Interchange	Los Angeles	405	10	331,700	9.8	20,900	6%	1,245,500	6,700	32%	398,600	2,449,400	$2,859,000	31%	123,600
I-80 @ Central St.	San Francisco-Oakland	80	8	270,200	8.3	23,800	9%	1,196,700	7,800	33%	392,100	2,851,500	$3,329,000	29%	113,700
San Gabriel River Fwy	Los Angeles	91	10	295,700	8.1	24,100	8%	1,194,300	7,700	32%	381,100	2,815,000	$3,286,000	31%	118,100
I-20 @ Fulton St.	Atlanta	20	6	207,300	8.1	23,700	11%	1,172,700	6,800	29%	336,500	2,566,300	$2,844,000	52%	175,000

Table A.2 Top 25 Highway Interchange Bottlenecks for Trucks
*Ranked By Annual Hours of Delay for Large Trucks Making Longer-Distance Trips*
Bottleneck				All Vehicles-2004		All Trucks-2004			"Large Trucks Making Longer Distance Trips"-2004
Location	Urban Area	Critically Congested Route No.	No. of Lanes	AADT	Daily Minutes of Delay per Vehicle	AADTT	Percent of All Vehicles	Annual Hours of Delay All Trucks	All Trips					Trips Greater Than 500 Miles
Location	Urban Area	Critically Congested Route No.	No. of Lanes	AADT	Daily Minutes of Delay per Vehicle	AADTT	Percent of All Vehicles	Annual Hours of Delay All Trucks	AADTT	Percent of All Trucks	Annual Hours of Delay	Annual Commodity Tons	Annual Commodity Value	Percent of Large Truck Trips	Annual Hours of Delay
I-35 @ Martin Luther King Jr	Austin	35	6	229,500	8.3	12,600	5%	635,000	11,200	89%	563,000	4,123,900	$4,768,000	39%	219,600
I-90/94 @ I-290 Interchange ("Circle Interchange")	Chicago-Northwestern IN	90	8	305,800	9.7	26,300	9%	1,544,900	9,200	35%	540,400	3,718,000	$4,218,000	53%	286,400
I-94 (Dan Ryan Expwy) @ I-90 Skyway Split (Southside)	Chicago-Northwestern IN	94	8	271,700	7.9	31,600	12%	1,512,900	11,100	35%	531,500	4,485,900	$5,089,000	53%	281,700
I-17 (Black Canyon Fwy): I-10 Interchange (the "Stack") to Cactus	Phoenix	17	6	217,300	9.2	28,900	13%	1,608,500	9,000	31%	501,600	3,326,700	$3,792,000	48%	240,800
San Bernardino Fwy	Los Angeles	10	8	268,700	7.2	34,900	13%	1,522,800	11,200	32%	488,700	4,094,500	$4,780,000	31%	151,500
SR 134 @ SR 2 Interchange	Los Angeles	134	8	247,900	8.3	29,600	12%	1,489,400	9,500	32%	477,500	3,473,000	$4,054,000	31%	148,000
I-285 @ I-85 Interchange ("Spaghetti Junction")	Atlanta	285	8	265,300	10.0	27,100	10%	1,641,200	7,800	29%	472,600	2,943,700	$3,262,000	52%	245,800
I-80/I-94 split (Southside)	Chicago-Northwestern IN	80	4	139,600	8.6	25,600	18%	1,343,600	9,000	35%	472,400	3,637,200	$4,127,000	53%	250,400
I-24 @ I-440N Interchange	Chattanooga (TN-GA)	24	4	118,200	8.3	18,500	16%	927,500	9,200	50%	462,500	3,330,000	$3,750,000	85%	393,100
Pulaski Rd @ I-55	Chicago-Northwestern IN	55	6	197,200	7.5	28,700	15%	1,300,400	10,000	35%	453,700	4,041,300	$4,585,000	53%	240,500
Long Beach Fwy	Los Angeles	710	8	246,100	8.3	27,500	11%	1,380,300	8,800	32%	442,400	3,217,100	$3,756,000	31%	137,100
I-290 @ I-355	Chicago-Northwestern IN	290	6	223,100	8.3	24,800	11%	1,246,200	8,700	35%	437,300	3,515,900	$3,989,000	53%	231,800
I-285 @ I-75 Interchange	Atlanta	285	6	226,300	9.6	25,700	11%	1,497,300	7,400	29%	431,500	2,792,800	$3,095,000	52%	224,400
SR 60 @ I-605 Interchange	Los Angeles	60	8	233,000	8.3	26,100	11%	1,314,200	8,400	32%	422,300	3,070,900	$3,585,000	31%	130,900
I-75 @ I-74 Interchange	Cincinnati (OH-KY)	75	6	193,100	9.7	19,200	10%	1,128,900	6,900	36%	405,300	2,735,200	$3,044,000	63%	255,300
I-405 (San Diego Fwy) @ I-605 Interchange	Los Angeles	405	10	331,700	9.8	20,900	6%	1,245,500	6,700	32%	398,600	2,449,400	$2,859,000	31%	123,600
I-75 @ U.S. 35 Interchange	Dayton	75	4	127,400	8.3	18,400	14%	923,100	7,900	43%	397,100	3,131,600	$3,485,000	54%	214,400
I-20 @ I-285 Interchange	Atlanta	20	6	187,200	8.3	27,000	14%	1,359,400	7,800	29%	392,100	2,943,700	$3,262,000	52%	203,900
I-80 @ Central St.	San Francisco-Oakland	80	8	270,200	8.3	23,800	9%	1,196,700	7,800	33%	392,100	2,851,500	$3,329,000	29%	113,700
San Gabriel River Fwy	Los Angeles	91	10	295,700	8.1	24,100	8%	1,194,300	7,700	32%	381,100	2,815,000	$3,286,000	31%	118,100
I-10 @ I-110 Interchange	Baton Rouge	10	6	150,400	7.2	15,200	10%	665,000	8,600	57%	375,200	3,163,900	$3,591,000	68%	255,100
I-75 @ I-85 Interchange	Atlanta	75	10	339,600	9.1	23,400	7%	1,288,800	6,800	29%	374,900	2,566,300	$2,844,000	52%	194,900
I-90 @ I-290	Buffalo-Niagara Falls	90	4	136,500	8.3	33,100	24%	1,661,900	7,300	22%	367,000	2,632,500	$2,968,000	58%	212,900
I-77 @ Tryon Rd	Charlotte	77	6	170,500	8.3	29,600	17%	1,487,100	7,300	25%	367,000	2,700,200	$2,983,000	45%	165,200
I-880 @ I-238	San Franciso-Oakland	880	8	282,700	8.3	22,000	8%	1,106,700	7,200	33%	361,900	2,632,200	$3,073,000	29%	105,000

Table A.3 Top 25 Highway Interchange Bottlenecks for Trucks
*Ranked By Annual Hours of Delay for Large Trucks Making Longer Trips Greater Than 500 Miles*
Bottleneck				All Vehicles-2004		All Trucks-2004			"Large Trucks Making Longer Distance Trips"-2004
Location	Urban Area	Critically Congested Route No.	No. of Lanes	AADT	Daily Minutes of Delay per Vehicle	AADTT	Percent of All Vehicles	Annual Hours of Delay All Trucks	All Trips					Trips Greater Than 500 Miles
Location	Urban Area	Critically Congested Route No.	No. of Lanes	AADT	Daily Minutes of Delay per Vehicle	AADTT	Percent of All Vehicles	Annual Hours of Delay All Trucks	AADTT	Percent of All Trucks	Annual Hours of Delay	Annual Commodity Tons	Annual Commodity Value	Percent of Large Truck Trips	Annual Hours of Delay
I-24 @ I-440N Interchange	Chattanooga (TN-GA)	24	4	118,200	8.3	18,500	16%	927,500	9,200	50%	462,500	3,330,000	$3,750,000	85%	393,100
U.S. 95 @ I-15 Interchange ("Spaghetti Bowl")	Las Vegas	95	6	199,900	9.8	11,300	6%	670,400	5,600	50%	333,100	1,992,500	$2,286,000	90%	299,800
I-90/94 @ I-290 Interchange ("Circle Interchange")	Chicago-Northwestern IN	90	8	305,800	9.7	26,300	9%	1,544,900	9,200	35%	540,400	3,718,000	$4,218,000	53%	286,400
I-94 (Dan Ryan Expwy) @ I-90 Skyway Split (Southside)	Chicago-Northwestern IN	94	8	271,700	7.9	31,600	12%	1,512,900	11,100	35%	531,500	4,485,900	$5,089,000	53%	281,700
I-75 @ I-74 Interchange	Cincinnati (OH-KY)	75	6	193,100	9.7	19,200	10%	1,128,900	6,900	36%	405,300	2,735,200	$3,044,000	63%	255,300
I-10 @ I-110 Interchange	Baton Rouge	10	6	150,400	7.2	15,200	10%	665,000	8,600	57%	375,200	3,163,900	$3,591,000	68%	255,100
I-80/I-94 split (Southside)	Chicago-Northwestern IN	80	4	139,600	8.6	25,600	18%	1,343,600	9,000	35%	472,400	3,637,200	$4,127,000	53%	250,400
I-285 @ I-85 Interchange ("Spaghetti Junction")	Atlanta	285	8	265,300	10.0	27,100	10%	1,641,200	7,800	29%	472,600	2,943,700	$3,262,000	52%	245,800
I-17 (Black Canyon Fwy): I-10 Interchange (the "Stack") to Cactus	Phoenix	17	6	217,300	9.2	28,900	13%	1,608,500	9,000	31%	501,600	3,326,700	$3,792,000	48%	240,800
Pulaski Rd @ I-55	Chicago-Northwestern IN	55	6	197,200	7.5	28,700	15%	1,300,400	10,000	35%	453,700	4,041,300	$4,585,000	53%	240,500
I-290 @ I-355	Chicago-Northwestern IN	290	6	223,100	8.3	24,800	11%	1,246,200	8,700	35%	437,300	3,515,900	$3,989,000	53%	231,800
I-40 @ I-24 Interchange	Nashville	40	4	147,600	8.3	14,600	10%	735,200	5,800	40%	291,600	2,099,300	$2,364,000	77%	224,500
I-285 @ I-75 Interchange	Atlanta	285	6	226,300	9.6	25,700	11%	1,497,300	7,400	29%	431,500	2,792,800	$3,095,000	52%	224,400
I-35 @ Martin Luther King Jr	Austin	35	6	229,500	8.3	12,600	5%	635,000	11,200	89%	563,000	4,123,900	$4,768,000	39%	219,600
I-15 between Tropicana and Flamingo	Las Vegas	15	6	165,900	6.4	12,400	7%	486,700	6,200	50%	242,800	2,206,000	$2,530,000	90%	218,500
I-12 @ Amite River, Baton Rouge	Baton Rouge	12	4	105,000	6.4	14,400	14%	561,900	8,100	57%	317,200	2,980,000	$3,383,000	68%	215,700
I-75 @ U.S. 35 Interchange	Dayton	75	4	127,400	8.3	18,400	14%	923,100	7,900	43%	397,100	3,131,600	$3,485,000	54%	214,400
I-90 @ I-290	Buffalo-Niagara Falls	90	4	136,500	8.3	33,100	24%	1,661,900	7,300	22%	367,000	2,632,500	$2,968,000	58%	212,900
I-20 @ I-285 Interchange	Atlanta	20	6	187,200	8.3	27,000	14%	1,359,400	7,800	29%	392,100	2,943,700	$3,262,000	52%	203,900
I-75 @ I-85 Interchange	Atlanta	75	10	339,600	9.1	23,400	7%	1,288,800	6,800	29%	374,900	2,566,300	$2,844,000	52%	194,900
I-264 @ I-64 Interchange	Louisville (KY-IN)	264	6	181,100	8.3	16,400	9%	825,500	5,400	33%	271,400	1,990,200	$2,218,000	69%	187,300
I-55 (Stevenson Expwy) @ I-294 Interchange	Chicago-Northwestern IN	55	6	172,600	9.6	17,200	10%	1,001,600	6,000	35%	349,900	2,424,800	$2,751,000	53%	185,400
I-80 @ I-480 Interchange	Omaha (NE-IA)	80	5	173,600	7.9	13,800	8%	658,500	4,500	32%	215,500	1,638,000	$1,856,000	86%	185,300
I-76 @ SR 77 Interchange+J179	Akron	76	4	122,600	8.3	14,000	11%	705,200	7,000	50%	351,900	2,774,800	$3,088,000	52%	183,000
I-15 @ I-215 Interchange (the "Fishbowl")	Las Vegas	15	6	165,600	6.6	10,100	6%	403,200	5,000	50%	200,300	1,779,100	$2,041,000	90%	180,300

Table A.4 Highway Interchange Bottlenecks for Trucks
*All High-Ranked Bottlenecks Ranked By Annual Hours of Delay for Large Trucks Making Longer Trips Greater Than 500 Miles*
Bottleneck				All Vehicles-2004		All Trucks-2004			"Large Trucks Making Longer Distance Trips"-2004
Location	Urban Area	Critically Congested Route No.	No. of Lanes	AADT	Daily Minutes of Delay per Vehicle	AADTT	Percent of All Vehicles	Annual Hours of Delay All Trucks	All Trips					Trips Greater Than 500 Miles
Location	Urban Area	Critically Congested Route No.	No. of Lanes	AADT	Daily Minutes of Delay per Vehicle	AADTT	Percent of All Vehicles	Annual Hours of Delay All Trucks	AADTT	Percent of All Trucks	Annual Hours of Delay	Annual Commodity Tons	Annual Commodity Value	Percent of Large Truck Trips	Annual Hours of Delay
I-24 @ I-440N Interchange	Chattanooga (TN-GA)	24	4	118,200	8.3	18,500	16%	927,500	9,200	50%	462,500	3,330,000	$3,750,000	85%	393,100
U.S. 95 @ I-15 Interchange ("Spaghetti Bowl")	Las Vegas	95	6	199,900	9.8	11,300	6%	670,400	5,600	50%	333,100	1,992,500	$2,286,000	90%	299,800
I-90/94 @ I-290 Interchange ("Circle Interchange")	Chicago-Northwestern IN	90	8	305,800	9.7	26,300	9%	1,544,900	9,200	35%	540,400	3,718,000	$4,218,000	53%	286,400
I-94 (Dan Ryan Expwy) @ I-90 Skyway Split (Southside)	Chicago-Northwestern IN	94	8	271,700	7.9	31,600	12%	1,512,900	11,100	35%	531,500	4,485,900	$5,089,000	53%	281,700
I-75 @ I-74 Interchange	Cincinnati (OH-KY)	75	6	193,100	9.7	19,200	10%	1,128,900	6,900	36%	405,300	2,735,200	$3,044,000	63%	255,300
I-10 @ I-110 Interchange	Baton Rouge	10	6	150,400	7.2	15,200	10%	665,000	8,600	57%	375,200	3,163,900	$3,591,000	68%	255,100
I-80/I-94 split (Southside)	Chicago-Northwestern IN	80	4	139,600	8.6	25,600	18%	1,343,600	9,000	35%	472,400	3,637,200	$4,127,000	53%	250,400
I-285 @ I-85 Interchange ("Spaghetti Junction")	Atlanta	285	8	265,300	10.0	27,100	10%	1,641,200	7,800	29%	472,600	2,943,700	$3,262,000	52%	245,800
I-17 (Black Canyon Fwy): I-10 Interchange (the "Stack") to Cactus	Phoenix	17	6	217,300	9.2	28,900	13%	1,608,500	9,000	31%	501,600	3,326,700	$3,792,000	48%	240,800
Pulaski Rd @ I-55	Chicago-Northwestern IN	55	6	197,200	7.5	28,700	15%	1,300,400	10,000	35%	453,700	4,041,300	$4,585,000	53%	240,500
I-290 @ I-355	Chicago-Northwestern IN	290	6	223,100	8.3	24,800	11%	1,246,200	8,700	35%	437,300	3,515,900	$3,989,000	53%	231,800
I-40 @ I-24 Interchange	Nashville	40	4	147,600	8.3	14,600	10%	735,200	5,800	40%	291,600	2,099,300	$2,364,000	77%	224,500
I-285 @ I-75 Interchange	Atlanta	285	6	226,300	9.6	25,700	11%	1,497,300	7,400	29%	431,500	2,792,800	$3,095,000	52%	224,400
I-35 @ Martin Luther King Jr	Austin	35	6	229,500	8.3	12,600	5%	635,000	11,200	89%	563,000	4,123,900	$4,768,000	39%	219,600
I-15 between Tropicana and Flamingo	Las Vegas	15	6	165,900	6.4	12,400	7%	486,700	6,200	50%	242,800	2,206,000	$2,530,000	90%	218,500
I-12 @ Amite River, Baton Rouge	Baton Rouge	12	4	105,000	6.4	14,400	14%	561,900	8,100	57%	317,200	2,980,000	$3,383,000	68%	215,700
I-75 @ U.S. 35 Interchange	Dayton	75	4	127,400	8.3	18,400	14%	923,100	7,900	43%	397,100	3,131,600	$3,485,000	54%	214,400
I-90 @ I-290	Buffalo-Niagara Falls	90	4	136,500	8.3	33,100	24%	1,661,900	7,300	22%	367,000	2,632,500	$2,968,000	58%	212,900
I-20 @ I-285 Interchange	Atlanta	20	6	187,200	8.3	27,000	14%	1,359,400	7,800	29%	392,100	2,943,700	$3,262,000	52%	203,900
I-75 @ I-85 Interchange	Atlanta	75	10	339,600	9.1	23,400	7%	1,288,800	6,800	29%	374,900	2,566,300	$2,844,000	52%	194,900
I-264 @ I-64 Interchange	Louisville (KY-IN)	264	6	181,100	8.3	16,400	9%	825,500	5,400	33%	271,400	1,990,200	$2,218,000	69%	187,300
I-55 (Stevenson Expwy) @ I-294 Interchange	Chicago-Northwestern IN	55	6	172,600	9.6	17,200	10%	1,001,600	6,000	35%	349,900	2,424,800	$2,751,000	53%	185,400
I-80 @ I-480 Interchange	Omaha (NE-IA)	80	5	173,600	7.9	13,800	8%	658,500	4,500	32%	215,500	1,638,000	$1,856,000	86%	185,300
I-76 @ SR 77 Interchange+J179	Akron	76	4	122,600	8.3	14,000	11%	705,200	7,000	50%	351,900	2,774,800	$3,088,000	52%	183,000
I-15 @ I-215 Interchange (the "Fishbowl")	Las Vegas	15	6	165,600	6.6	10,100	6%	403,200	5,000	50%	200,300	1,779,100	$2,041,000	90%	180,300
I-20 @ Fulton St.	Atlanta	20	6	207,300	8.1	23,700	11%	1,172,700	6,800	29%	336,500	2,566,300	$2,844,000	52%	175,000
I-77 @ Tryon Rd	Charlotte	77	6	170,500	8.3	29,600	17%	1,487,100	7,300	25%	367,000	2,700,200	$2,983,000	45%	165,200
San Bernardino Fwy	Los Angeles	10	8	268,700	7.2	34,900	13%	1,522,800	11,200	32%	488,700	4,094,500	$4,780,000	31%	151,500
SR-134 @ SR 2 Interchange	Los Angeles	134	8	247,900	8.3	29,600	12%	1,489,400	9,500	32%	477,500	3,473,000	$4,054,000	31%	148,000
Long Beach Fwy	Los Angeles	710	8	246,100	8.3	27,500	11%	1,380,300	8,800	32%	442,400	3,217,100	$3,756,000	31%	137,100
SR 60 @ I-605 Interchange	Los Angeles	60	8	233,000	8.3	26,100	11%	1,314,200	8,400	32%	422,300	3,070,900	$3,585,000	31%	130,900
I-405 (San Diego Fwy) @ I-605 Interchange	Los Angeles	405	10	331,700	9.8	20,900	6%	1,245,500	6,700	32%	398,600	2,449,400	$2,859,000	31%	123,600
San Gabriel River Fwy	Los Angeles	91	10	295,700	8.1	24,100	8%	1,194,300	7,700	32%	381,100	2,815,000	$3,286,000	31%	118,100
I-80 @ Central St.	San Francisco-Oakland	80	8	270,200	8.3	23,800	9%	1,196,700	7,800	33%	392,100	2,851,500	$3,329,000	29%	113,700
I-880 @ I-238	San Francisco-Oakland	880	8	282,700	8.3	22,000	8%	1,106,700	7,200	33%	361,900	2,632,200	$3,073,000	29%	105,000
I-93 @ I-95 Interchange	Boston	93	6	188,400	8.3	25,500	14%	1,280,100	2,800	11%	140,800	1,020,000	$1,220,000	36%	50,700

Table A.5 All Highway Interchange Bottlenecks for Trucks
*Ranked By Annual Hours of Delay for All Trucks*
Bottleneck				All Vehicles-2004		All Trucks-2004			"Large Trucks Making Longer Distance Trips"-2004
Location	Urban Area	Critically Congested Route No.	No. of Lanes	AADT	Daily Minutes of Delay per Vehicle	AADTT	Percent of All Vehicles	Annual Hours of Delay All Trucks	All Trips					Trips Greater Than 500 Miles
Location	Urban Area	Critically Congested Route No.	No. of Lanes	AADT	Daily Minutes of Delay per Vehicle	AADTT	Percent of All Vehicles	Annual Hours of Delay All Trucks	AADTT	Percent of All Trucks	Annual Hours of Delay	Annual Commodity Tons	Annual Commodity Value	Percent of Large Truck Trips	Annual Hours of Delay
I-90 @ I-290	Buffalo-Niagara Falls	90	4	136,500	8.3	33,100	24%	1,661,900	7,300	22%	367,000	2,632,500	$2,968,000	58%	212,900
I-285 @ I-85 Interchange ("Spaghetti Junction")	Atlanta	285	8	265,300	10.0	27,100	10%	1,641,200	7,800	29%	472,600	2,943,700	$3,262,000	52%	245,800
I-17 (Black Canyon Fwy): I-10 Interchange (the "Stack") to Cactus	Phoenix	17	6	217,300	9.2	28,900	13%	1,608,500	9,000	31%	501,600	3,326,700	$3,792,000	48%	240,800
I-90/94 @ I-290 Interchange ("Circle Interchange")	Chicago-Northwestern IN	90	8	305,800	9.7	26,300	9%	1,544,900	9,200	35%	540,400	3,718,000	$4,218,000	53%	286,400
San Bernardino Fwy	Los Angeles	10	8	268,700	7.2	34,900	13%	1,522,800	11,200	32%	488,700	4,094,500	$4,780,000	31%	151,500
I-94 (Dan Ryan Expwy) @ I-90 Skyway Split (Southside)	Chicago-Northwestern IN	94	8	271,700	7.9	31,600	12%	1,512,900	11,100	35%	531,500	4,485,900	$5,089,000	53%	281,700
I-285 @ I-75 Interchange	Atlanta	285	6	226,300	9.6	25,700	11%	1,497,300	7,400	29%	431,500	2,792,800	$3,095,000	52%	224,400
SR 134 @ SR 2 Interchange	Los Angeles	134	8	247,900	8.3	29,600	12%	1,489,400	9,500	32%	477,500	3,473,000	$4,054,000	31%	148,000
I-77 @ Tryon Rd	Charlotte	77	6	170,500	8.3	29,600	17%	1,487,100	7,300	25%	367,000	2,700,200	$2,983,000	45%	165,200
Long Beach Fwy	Los Angeles	710	8	246,100	8.3	27,500	11%	1,380,300	8,800	32%	442,400	3,217,100	$3,756,000	31%	137,100
I-20 @ I-285 Interchange	Atlanta	20	6	187,200	8.3	27,000	14%	1,359,400	7,800	29%	392,100	2,943,700	$3,262,000	52%	203,900
I-80/I-94 split (Southside)	Chicago-Northwestern IN	80	4	139,600	8.6	25,600	18%	1,343,600	9,000	35%	472,400	3,637,200	$4,127,000	53%	250,400
SR 60 @ I-605 Interchange	Los Angeles	60	8	233,000	8.3	26,100	11%	1,314,200	8,400	32%	422,300	3,070,900	$3,585,000	31%	130,900
Pulaski Rd @ I-55	Chicago-Northwestern IN	55	6	197,200	7.5	28,700	15%	1,300,400	10,000	35%	453,700	4,041,300	$4,585,000	53%	240,500
I-75 @ I-85 Interchange	Atlanta	75	10	339,600	9.1	23,400	7%	1,288,800	6,800	29%	374,900	2,566,300	$2,844,000	52%	194,900
I-93 @ I-95 Interchange	Boston	93	6	188,400	8.3	25,500	14%	1,280,100	2,800	11%	140,800	1,020,000	$1,220,000	36%	50,700
I-290 @ I-355	Chicago-Northwestern IN	290	6	223,100	8.3	24,800	11%	1,246,200	8,700	35%	437,300	3,515,900	$3,989,000	53%	231,800
I-405 (San Diego Fwy) @ I-605 Interchange	Los Angeles	405	10	331,700	9.8	20,900	6%	1,245,500	6,700	32%	398,600	2,449,400	$2,859,000	31%	123,600
I-80 @ Central St.	San Francisco-Oakland	80	8	270,200	8.3	23,800	9%	1,196,700	7,800	33%	392,100	2,851,500	$3,329,000	29%	113,700
San Gabriel River Fwy	Los Angeles	91	10	295,700	8.1	24,100	8%	1,194,300	7,700	32%	381,100	2,815,000	$3,286,000	31%	118,100
I-20 @ Fulton St.	Atlanta	20	6	207,300	8.1	23,700	11%	1,172,700	6,800	29%	336,500	2,566,300	$2,844,000	52%	175,000
I-75 @ I-74 Interchange	Cincinnati (OH-KY)	75	6	193,100	9.7	19,200	10%	1,128,900	6,900	36%	405,300	2,735,200	$3,044,000	63%	255,300
I-880 @ I-238	San Francisco-Oakland	880	8	282,700	8.3	22,000	8%	1,106,700	7,200	33%	361,900	2,632,200	$3,073,000	29%	105,000
SR 315 @ I-70 Interchange	Columbus	315	2	64,000	8.3	21,800	34%	1,097,600	5,500	25%	276,500	2,180,200	$2,426,000	14%	38,700
Columbia Rd @ I-93	Boston	93	6	189,300	6.4	27,600	15%	1,081,800	3,000	11%	117,500	1,092,900	$1,307,000	36%	42,300
I-270 @ I-70 Interchange (West)	Columbus	270	4	122,600	9.5	18,600	15%	1,077,800	4,700	25%	271,900	1,863,100	$2,073,000	14%	38,100
SR 91 @ I-215 Interchange	Riverside-San Bernardino	91	10	276,500	6.7	26,100	9%	1,067,600	8,000	31%	327,700	2,924,600	$3,414,000	34%	111,400
I-710 @ Whittier Blvd	Los Angeles	60	8	257,500	5.5	31,500	12%	1,059,700	10,100	32%	340,200	3,692,300	$4,310,000	31%	105,500
Loop-202: Dobson to I-10	Phoenix	202	8	228,000	7.5	23,300	10%	1,055,700	7,200	31%	326,700	2,661,300	$3,033,000	48%	156,800
Worcester Rd @ I-95	Boston	95	6	173,600	8.1	21,000	12%	1,041,800	2,300	11%	113,800	837,900	$1,002,000	36%	41,000
I-10 @ SR 51/SR 202 Interchange ("Mini-Stack")	Phoenix	10	8	293,000	7.9	21,700	7%	1,038,000	6,700	31%	320,800	2,476,500	$2,823,000	48%	154,000
Orange Fwy	Los Angeles	91	7	244,200	8.0	21,100	9%	1,029,700	6,800	32%	331,100	2,485,900	$2,902,000	31%	102,600
I-495 @ I-95 Interchange (MD)	Washington (DC-MD-VA)	95	5	193,100	9.7	17,300	9%	1,020,100	2,400	14%	141,900	880,600	$978,000	53%	75,200
I-95 @ I-595 Interchange	Miami-Hialeah	95	9	308,500	8.3	20,100	7%	1,011,400	3,900	20%	196,000	1,467,900	$1,657,000	50%	98,000
I-55 (Stevenson Expwy) @ I-294 Interchange	Chicago-Northwestern IN	55	6	172,600	9.6	17,200	10%	1,001,600	6,000	35%	349,900	2,424,800	$2,751,000	53%	185,400
I-10 @ I-17 Interchange West (the "Stack")	Phoenix	10	8	238,800	8.4	19,300	8%	982,600	6,000	31%	306,200	2,217,800	$2,528,000	48%	147,000
I-76 @ Girard Ave	Philadelphia (PA-NJ)	76	6	200,400	7.3	22,100	11%	982,200	5,600	26%	249,200	2,133,600	$2,397,000	26%	64,800
I-71 @ I-70 Interchange	Columbus	71	3	112,500	8.3	19,300	17%	968,800	4,900	25%	246,300	1,942,400	$2,162,000	14%	34,500
SR 91 @ I-215 Interchange	Riverside-San Bernardino	91	10	275,500	6.7	23,600	9%	966,900	7,300	31%	299,000	2,668,700	$3,115,000	34%	101,700
Darby Paoli Rd @ U.S. 202	Philadelphia (PA-NJ)	202	4	114,200	8.3	18,900	17%	950,600	4,800	26%	241,300	1,828,800	$2,055,000	26%	62,700
U.S. 57 @ U.S. 91	Los Angeles	57	10	291,000	7.9	19,800	7%	946,900	6,300	32%	301,700	2,303,100	$2,689,000	31%	93,500
I-24 @ I-440N Interchange	Chattanooga (TN-GA)	24	4	118,200	8.3	18,500	16%	927,500	9,200	50%	462,500	3,330,000	$3,750,000	85%	393,100
I-75 @ U.S. 35 Interchange	Dayton	75	4	127,400	8.3	18,400	14%	923,100	7,900	43%	397,100	3,131,600	$3,485,000	54%	214,400
I-110 @ Saulson Ave	Los Angeles	110	10	333,500	8.3	18,100	5%	910,000	5,800	32%	291,600	2,120,400	$2,475,000	31%	90,400
I-5 (San Diego Fwy) @ I-405 Interchange ("El Toro")	Los Angeles	5	11	371,500	7.0	20,800	6%	887,600	6,700	32%	286,400	2,449,400	$2,859,000	31%	88,800
I-495 @ I-270 Interchange	Washington (DC-MD-VA)	495	7	253,700	8.6	16,800	7%	884,100	2,400	14%	126,000	880,600	$978,000	53%	66,800
I-70 @ I-25 Interchange ("Mousetrap")	Denver	70	4	157,300	8.3	17,100	11%	859,200	2,900	17%	145,800	1,099,000	$1,243,000	67%	97,700
U.S. 101 (Ventura Fwy) @ I-405 Interchange	Los Angeles	101	10	331,300	9.8	14,400	4%	855,600	4,600	32%	273,700	1,681,700	$1,963,000	31%	84,800
I-70 @ U.S. 23 Interchange	Columbus	70	5	163,900	8.3	16,700	10%	839,100	4,200	25%	211,100	1,664,900	$1,853,000	14%	29,600
I-264 @ I-64 Interchange	Louisville (KY-IN)	264