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Appendix B

Steep-Grade Bottlenecks

Figure B.1 Steep-Grade Bottlenecks on Freeways Used As Intercity Truck Corridors
HPMS Sample Sections Only

Map of the continental United States showing the interstate highway system as a network and locations of steep grade bottlenecks on freeways serving as intercity freight corridors. Dense clusters are shown in Vermont and New Hampshire; in upper New York state; in Maryland, Virginia, and West Virginia; in southern and central California; in Washington, Oregon, Idaho, and Montana; and in Utah.

Table B.1 Top 25 Steep-Grade Bottlenecks on Freeways Used As Intercity Truck Corridors
HPMS Sample Sections Only
Route Number Bottleneck Location No. of Lanes All Vehicles-2004 All Trucks-2004
AADT AADTT Percent of All Vehicles Annual Hours of Delay All Trucks Annual Hours of Delay All Trucks (Expanded)
5Kern, California866,76322,03233%1,119,4381,272,800
15San Bernardino, California8122,75122,09518%1,049,1601,403,777
10Riverside, California422,2798,68939%466,219699,328
IS81Montgomery, Virginia444,03914,09232%456,6452,141,666
77Mercer, West Virginia431,0516,52121%414,253433,723
IS81Smyth, Virginia432,1748,36526%352,2151,357,789
5Jackson, Oregon416,3456,70141%342,763342,763
5Josephine, Oregon420,7677,06134%314,310314,310
5Siskiyou, California415,2344,87532%267,495299,326
40St. Francis, Arkansas431,71614,58946%260,546876,997
8San Diego, California421,0094,20220%252,015378,022
84Umatilla, Oregon410,1444,05840%247,521247,521
84Malheur, Oregon48,5434,01547%242,338242,338
5Josephine, Oregon420,2317,89039%238,749238,749
77Raleigh, West Virginia442,0298,82621%227,184234,681
40Guilford, North Carolina882,90415,75219%221,883777,257
5Douglas, Oregon419,8576,75134%214,815214,815
5Marion, Oregon464,15013,47221%214,408214,408
64Crawford, Indiana417,4305,22930%203,965271,681
30Hempstead, Arkansas423,03010,59446%191,543964,992
5Jackson, Oregon415,3006,27341%186,236186,236
64Carter, Kentucky415,0984,52930%179,446179,446
95Northampton, North Carolina436,0716,85319%168,934258,130
77Kanawha, West Virginia432,3156,78621%163,371172,683
40Torrance, New Mexico415,4486,17940%161,660495,488

Figure B.2 Steep-Grade Bottlenecks on Arterials Used As Intercity Truck Corridors Used As Urban Truck Corridors
HPMS Sample Sections Only

Map of the continental United States showing locations of steep grade bottlenecks on arterial roadways serving as intercity freight corridors. Dense clusters are shown in Vermont and New Hampshire; in West Virginia, Kentucky, Virginia, North Carolina, and South Carolina; in Georgia, in Tennessee and Indiana; in Michigan, in California; and in Washington, Idaho, Montana, Wyoming, Utah, and Colorado.

Table B.2 Top 25 Steep-Grade Bottlenecks on Arterials Used As Intercity Truck Corridors
HPMS Sample Sections Only
Route Number Bottleneck Location No. of Lanes All Vehicles-2004 All Trucks-2004
AADT AADTT Percent of All Vehicles Annual Hours of Delay All Trucks Annual Hours of Delay All Trucks (Expanded)
58Kern, California420,8136,86833%334,820758,033
131Kent, Mississippi442,6045,11212%191,106445,851
18San Bernardino, California210,7571,93618%169,939855,813
58Kern, California421,9617,24733%146,081330,726
101Santa Barbara, California430,0273,90413%134,025303,433
17Santa Clara, California463,6162,5454%128,589143,891
17Santa Cruz, California463,6543,1835%114,915128,589
U.S. 220Franklin, Virginia415,3652,45816%104,076726,033
299Shasta, California24,0841,26631%85,000194,650
223Lenawee, Mississippi210,2271,84118%84,656364,866
23Madison, North Carolina28,4191,17914%81,267149,693
15Perry, Kentucky211,0291,65415%79,887158,976
31Miami, Indiana421,8743,93718%74,565195,285
74Cleveland, North Carolina426,2613,67714%68,099226,632
31Berrien, Mississippi220,0011,6008%61,697404,609
80Floyd, Kentucky414,4541,73412%58,703116,819
U.S. 220Henry, Virginia417,8233,03017%57,441422,710
19Haywood, North Carolina210,1001,01010%55,453546,157
U.S. 30Bannock, Idaho45,1021,42928%53,570104,782
50El Dorado, California426,5771,8607%53,480121,080
154Santa Barbara, California214,1401,1318%52,873266,266
23Macon, North Carolina423,2313,25214%52,222173,794
25EBell, Kentucky420,4462,04510%50,44388,276
89Siskiyou, California22,25476634%49,531113,425
U.S. 58Halifax, Virginia49,0691,72319%49,200162,853

Figure B.3 Steep-Grade Bottlenecks on Arterials Used As Urban Truck Corridors
HPMS Sample Sections Only

Map of the continental United States showing locations of signalized bottlenecks on arterials used as urban corridors. Dense clusters are shown in western Pennsylvania, New Jersey, Connecticut, and Rhode Island; in Washington, D.C.; in North and South Carolina; in Louisiana; in Wisconsin, northern Illinois, and northern Indiana; and in Washington state.

Table B.3 Steep-Grade Bottlenecks on Arterials Used As Urban Truck Corridors
HPMS Sample Sections Only
Route Number Bottleneck Location No. of Lanes All Vehicles-2004 All Trucks-2004
AADT AADTT Percent of All Vehicles Annual Hours of Delay All Trucks Annual Hours of Delay All Trucks (Expanded)
280Shelby, Alabama451,4115,14110%177,156415,961
1Aiken, South Carolina420,8892,29811%72,39595,199
14Los Angeles, California420,1151,0065%27,184476,319
74Riverside, California420,2691,4197%23,02528,666
100St. Louis, Missouri425,2651,5166%16,609233,485
CR 94812086619,3719695%16,56734,178
21Jefferson, Missouri417,8301,0706%14,992153,311
78Jackson, Missouri424,8691,4926%13,22744,945
60Boyd, Kentucky425,5591,0224%8,6089,443
SR 43Jefferson, Ohio420,3228134%7,3177,485
431Madison, Alabama420,6874142%5,06410,006

Figure B.4 Steep-Grade Bottlenecks on Arterials Used As Truck Access Routes
HPMS Sample Sections Only

Map of the continental United States showing locations of steep grade bottlenecks on arterial roadways serving as truck access routes. Two clusters are shown in central and southern California.

Table B.4 Steep-Grade Bottlenecks on Arterials Used As Truck Access Routes
HPMS Sample Sections Only
Route Number Bottleneck Location No. of Lanes All Vehicles-2004 All Trucks-2004
AADT AADTT Percent of All Vehicles Annual Hours of Delay All Trucks Annual Hours of Delay All Trucks (Expanded)
-Fresno, California435,8583,2279%42,064276,610
-Ventura, California436,7281,1023%13,04313,043
-Fresno, California415,1184543%5,51713,257

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