National Bridge Inventory: California Congressional District 24
- Of the 1,319 bridges in the counties of this district, 78, or 5.9 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
- This is down from 127 bridges classified as structurally deficient in 2014.
- 20 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
- Repairs are needed on 271 bridges in the district, which will cost an estimated $184.8 million.
County | Year Built | Daily Crossings | Type of Bridge | Location |
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Ventura | 1968 | 72,500 | Urban freeway/expressway | US 101 SB over Vcy Ry |
Ventura | 1961 | 60,500 | Urban freeway/expressway | Route 101 SB over San Jon Crk & San Jon Rd |
Santa Barbara | 1961 | 60,500 | Urban freeway/expressway | US Highway 101 NB over San Jose Creek |
Santa Barbara | 1961 | 60,500 | Urban freeway/expressway | US Highway 101 NB over Maria Ygnacio Creek |
Santa Barbara | 1946 | 60,500 | Urban freeway/expressway | US Highway 101 SB over San Jose Creek |
Santa Barbara | 1963 | 54,500 | Urban freeway/expressway | US Hwy 101 NB over Castillo Street |
Ventura | 1971 | 43,600 | Urban other principal arterial | Victoria Ave over UP RR & Amtrak |
Ventura | 1975 | 43,000 | Urban other principal arterial | State Route 232 over US Highway 101 |
Ventura | 1973 | 40,000 | Rural arterial | Route 101 SB over Mobil Pier Access |
Santa Barbara | 1959 | 38,000 | Urban freeway/expressway | U.S. Hwy 101 NB over Sheffield Drive |
Santa Barbara | 1907 | 37,500 | Urban freeway/expressway | U.S. Hwy 101 SB over Arroyo Parida |
Ventura | 1959 | 36,545 | Urban minor arterial | Pleasant Valley Rd over Route 101 |
Ventura | 1981 | 33,000 | Urban other principal arterial | Madera Road over UP RR, Amtrak, Metrolink |
Ventura | 1966 | 32,000 | Rural arterial | State Route 126 over Oleary Creek |
Ventura | 1979 | 30,000 | Urban other principal arterial | Madera Road over Arroyo Simi |
Santa Barbara | 1964 | 25,445 | Urban other principal arterial | Hollister Ave over San Jose Creek |
Ventura | 1971 | 22,500 | Urban other principal arterial | 1st Street over Arroyo Simi |
Santa Barbara | 1972 | 17,000 | Urban freeway/expressway | State Route 154 over LA Colina Rd |
Santa Barbara | 1972 | 17,000 | Urban freeway/expressway | State Route 154 over Primavera Rd |
Santa Barbara | 1974 | 16,000 | Rural arterial | US Highway 101 NB over Refugio Road |
Santa Barbara | 1974 | 16,000 | Rural arterial | US Highway 101 SB over Refugio Road |
San Luis Obispo | 1959 | 15,682 | Urban minor arterial | 24th St over UP RR & Amtrak |
Santa Barbara | 1966 | 15,000 | Urban collector | Clark Ave over US Highway 101 |
Santa Barbara | 1958 | 14,500 | Rural arterial | US Highway 101 SB over State Route 135 |
Santa Barbara | 1958 | 14,500 | Rural arterial | US Highway 101 NB over State Route 135 |
Type of Bridge | Number of Bridges | Area of All Bridges (sq. meters) |
Daily Crossings on All Bridges | Number of Structurally Deficient Bridges | Area of Structurally Deficient Bridges (sq. meters) |
Daily Crossings on Structurally Deficient Bridges |
---|
Rural Interstate | 5 | 2,124 | 41,320 | 0 | 0 | 0 |
Rural arterial | 143 | 133,415 | 3,075,378 | 6 | 5,070 | 133,000 |
Rural minor arterial | 126 | 92,647 | 613,189 | 4 | 3,886 | 12,020 |
Rural major collector | 86 | 49,832 | 240,350 | 8 | 10,384 | 19,580 |
Rural minor collector | 37 | 9,115 | 37,910 | 1 | 231 | 249 |
Rural local road | 163 | 53,024 | 140,391 | 6 | 975 | 1,730 |
Urban Interstate | 0 | 0 | 0 | 0 | 0 | 0 |
Urban freeway/expressway | 268 | 290,136 | 14,699,825 | 12 | 8,430 | 497,250 |
Urban other principal arterial | 147 | 206,003 | 2,971,868 | 13 | 21,177 | 256,144 |
Urban minor arterial | 136 | 86,654 | 1,429,712 | 11 | 5,770 | 92,866 |
Urban collector | 92 | 28,913 | 366,913 | 9 | 3,605 | 37,084 |
Urban local road | 116 | 49,482 | 280,725 | 8 | 2,186 | 27,737 |
Total | 1,319 | 1,001,345 | 23,897,581 | 78 | 61,714 | 1,077,660 |
Type of Work | Number of Bridges | Cost to Repair (in millions) |
Daily Crossings | Area of Bridges (sq. meters) |
---|
Bridge replacement | 37 | $41.7 | 209,101 | 16,444 |
Widening & rehabilitation | 0 | $0.0 | 0 | 0 |
Rehabilitation | 229 | $143.0 | 3,546,030 | 147,884 |
Deck rehabilitation/replacement | 0 | $0.0 | 0 | 0 |
Other structural work | 5 | $0.1 | 1,550 | 625 |
Total | 271 | $184.8 | 3,756,681 | 164,954 |
Data includes information for the following area(s): San Luis Obispo County, Santa Barbara County, Ventura County
About the data:
Data from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), released March 15, 2019. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.
Effective January 1, 2018, FHWA changed the definition of structurally deficient as part of the final rule on highway and bridge performance measures, published May 20, 2017 pursuant to the 2012 federal aid highway bill Moving Ahead for Progress in the 21st Century Act (MAP-21). Two measures that were previously used to classify bridges as structurally deficient are no longer used. This includes bridges where the overall structural evaluation was rated in poor or worse condition, or where the adequacy of waterway openings was insufficient.
The new definition limits the classification to bridges where one of the key structural elements—the deck, superstructure, substructure or culverts, are rated in poor or worse condition. During inspection, the conditions of a variety of bridge elements are rated on a scale of 0 (failed condition) to 9 (excellent condition). A rating of 4 is considered “poor” condition.
Cost estimates have been derived by ARTBA, based on 2017 average bridge replacement costs for structures on and off the National Highway System, published by FHWA. Bridge rehabilitation costs are estimated to be 68 percent of replacement costs. A bridge is considered to need repair if the structure has identified repairs as part of the NBI, a cost estimate is supplied by the bridge owner or the bridge is classified as structurally deficient.
Bridges are classified by FHWA into types based on the functional classification of the roadway on the bridge. Interstates comprise routes officially designated by the Secretary of Transportation. Other principal arterials serve major centers of urban areas or provide mobility through rural areas. Freeways and expressways have directional lanes generally separated by a physical barrier, and access/egress points generally limited to on- and off-ramps. Minor arterials serve smaller areas and are used for trips of moderate length. Collectors funnel traffic from local roads to the arterial network; major collectors have higher speed limits and traffic volumes and are longer in length and spaced at greater intervals, while minor collectors are shorter and provide service to smaller communities. Local roads do not carry through traffic and are intended for short distance travel.
28
from 35 in 2017
in the nation in % of structurally deficient bridges
1. Rhode Island | 23.1% |
---|---|
27. Kentucky | 7.1% |
28. California | 7.0% |
29. Idaho | 7.0% |
7
from 13 in 2017
in the nation in # of structurally deficient bridges
1. Iowa | 4,675 |
---|---|
6. North Carolina | 1,871 |
7. California | 1,812 |
8. New York | 1,757 |