National Bridge Inventory: Mississippi



  • Of the 16,878 bridges in the state, 1,386, or 8.2 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 1,479 bridges classified as structurally deficient in 2016.
  • The deck area of structurally deficient bridges accounts for 3.9 percent of total deck area on all structures.
  • 7 of the structurally deficient bridges are on the Interstate Highway System. A total of 98.3 percent of the structurally deficient bridges are not on the National Highway System, which includes the Interstate and other key roads linking major airports, ports, rail and truck terminals.
  • 2,944 bridges are posted for load, which may restrict the size and weight of vehicles crossing the structure.
  • The state has identified needed repairs on 7,377 bridges at an estimated cost of $2.5 billion.
  • This compares to 7,332 bridges that needed work in 2016.

County Year Built Daily Crossings Type of Bridge Location
Hinds 1968 45,000 Urban Interstate I 20 over Lynch Creek
Warren 1973 23,000 Urban Interstate Vicksburg Bridge
Hinds 1966 18,500 Urban Interstate I 20 over I 55 to I 20 West
Rankin 1981 18,000 Urban other principal arterial SR 25 over Plummer Slough
Tate 1959 15,500 Rural Interstate I 55 over Hickahala Creek
Tate 1959 15,500 Rural Interstate I 55 over Hickahala Creek
Lauderdale 1959 15,000 Urban Interstate I 20/I 59 over Knight Parker Road
Lee 1965 15,000 Urban minor arterial Eason Blvd over Town and Kings Creek
Pearl River 1948 15,000 Urban other principal arterial US 11 over Hobolochitto Creek
Hinds 1920 14,000 Urban minor arterial Monument St over Town Creek
Hinds 1938 14,000 Urban other principal arterial US 80 over Pearl River
Rankin 1938 13,500 Urban other principal arterial US 80 over KCS RR
Pontotoc 1955 13,000 Rural minor arterial SR 15 over Lappatubby Creek
Harrison 1938 13,000 Urban other principal arterial US 49 over Flat Branch
Marshall 1975 11,500 Urban Interstate I 22 over SR 4/SR 7
Hinds 1994 11,000 Urban collector M. L. King Jr. Dr. over Tributary Town Cr
Coahoma 1936 11,000 Urban other principal arterial Second Street over Sunflower River
Hinds 1966 11,000 Urban minor arterial Mcdowell Rd over Caney Creek
Pontotoc 1952 8,700 Rural major collector West Main Street over Mubby Creek
DeSoto 1935 8,400 Urban other principal arterial US 51 over Stream
Hinds 1967 7,800 Urban minor arterial Beasley Rd over Trib Hanging Moss Cr
Pike 1933 7,300 Rural major collector US 51 over Unnamed Stream
Hinds 1969 7,100 Urban collector Mayes St over Ill Central Gulf RR
Marshall 1958 7,100 Rural major collector SR 309 over Stream
Newton 1952 7,100 Rural major collector US 80 over KCS RR
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 505 863,391 6,195,940 2 2,884 31,000
Rural arterial 1,201 1,533,200 6,231,181 4 3,967 16,700
Rural minor arterial 1,315 932,576 3,815,890 35 23,776 115,900
Rural major collector 3,801 1,715,784 4,270,118 299 103,261 287,610
Rural minor collector 853 313,317 717,785 44 8,599 16,625
Rural local road 7,112 1,812,437 1,479,115 928 133,500 113,438
Urban Interstate 450 900,264 11,520,780 5 74,581 113,000
Urban freeway/expressway 94 124,009 1,217,250 0 0 0
Urban other principal arterial 553 1,049,618 6,899,479 11 13,111 115,300
Urban minor arterial 279 303,155 1,898,664 14 6,599 87,830
Urban collector 316 163,694 1,154,920 23 7,665 61,805
Urban local road 399 117,546 395,446 21 3,057 14,810
Total 16,878 9,828,991 45,796,568 1,386 381,001 974,018
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 5,403 $1,654 6,184,947 1,593,600
Widening & rehabilitation 1,010 $556 7,738,525 763,825
Rehabilitation 345 $65 522,634 93,328
Deck rehabilitation/replacement 35 $11 30,031 16,005
Other structural work 584 $172 762,749 245,276
Total 7,377 $2,458 15,238,886 2,712,035

About the data:

Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on March 11, 2021. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections. Cost estimates were downloaded by ARTBA on March 11, 2021.

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 2019 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 repair cost estimate is supplied by the bridge owner or the bridge is classified as structurally deficient. Please note that for a few states, the number of bridges needing to be repaired can vary significantly from year to year, and reflects the data entered by the state.

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.

19
Compared to 15 in 2019

in the nation in % of structurally deficient bridges

1. West Virginia 21.2%
18. Nebraska 8.5%
19. Mississippi 8.2%
20. South Carolina 7.9%

11
Compared to 10 in 2019

in the nation in # of structurally deficient bridges

1. Iowa 4,571
10. North Carolina 1,460
11. Mississippi 1,386
12. Ohio 1,377

35
Compared to 30 in 2019

in the nation in % of structurally deficient bridge deck area

1. Rhode Island 21.0%
34. Minnesota 4.0%
35. Mississippi 4.0%
36. Vermont 4.0%
Full State Ranking

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  • Source: Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on March 11, 2021. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.

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