National Bridge Inventory: Tennessee Congressional District 9


  • Of the 1,077 bridges in the counties of this district, 48, or 4.5 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is up from 45 bridges classified as structurally deficient in 2019.
  • Repairs are needed on 381 bridges in the district, which will cost an estimated $786.0 million.
  • This compares to 397 bridges that needed work in 2019.
  • There currently are now projects in the District that use IIJA formula bridge funds.

County Year Built Daily Crossings Type of Bridge Location
Shelby 1966 105,381 Urban Interstate I-240SB 348605B over I-240 EB / Agnes Pl & RR
Shelby 1958 59,405 Urban other principal arterial Fas 177 over Wolf River
Shelby 1968 53,975 Urban freeway/expressway Fau 4032 over Waring Rd
Shelby 1973 53,211 Urban Interstate I40-Ll-Exit-Ramp over I40-WB-Ex Rp / N 3rd St.
Shelby 1929 48,162 Urban other principal arterial Fap 14 297767K over IC RR & Nonconnah Creek
Shelby 1968 47,158 Urban minor arterial Fau 4032 over Holmes St
Shelby 1968 47,158 Urban minor arterial Fau 4032 over Holmes St
Shelby 1969 47,158 Urban minor arterial Fau 4032 over N Highland St
Shelby 1969 47,158 Urban minor arterial Fau 4032 over N. Highland St.
Shelby 1958 44,832 Urban minor arterial Fau 2825 over Cherry Creek
Shelby 1970 36,821 Urban other principal arterial Fau 2830 over Johns Creek
Shelby 1978 36,663 Urban freeway/expressway Fau 2810 over Winchester Rd
Shelby 1928 33,396 Urban other principal arterial Fau 57 299598G over SR 23 CSX & Cnic RR
Shelby 1979 31,787 Urban other principal arterial Fas 175 over Branch of Johns Creek
Shelby 1954 25,855 Urban other principal arterial Fau 2810 663402M over Airways Blvd/Yale Yards
Shelby 1963 25,735 Urban minor arterial Fau 2878 over Branch
Shelby 1964 25,215 Urban other principal arterial Fap 14 over SR-14 / I-55
Shelby 1962 23,199 Urban minor arterial Fau 5012 over Johns Creek
Shelby 1978 22,230 Urban other principal arterial Fau 2813 over Plough Blvd. SB. Lanes
Shelby 1965 22,230 Urban other principal arterial Fau 2813 over Days Creek
Shelby 1968 21,780 Urban minor arterial White Station Rd. over Sam Cooper Blvd.
Shelby 1970 21,303 Urban minor arterial Fau 2814 348583D over pedestrian walkway
Shelby 1968 21,303 Urban minor arterial Fau 2814 over Sam Cooper Blvd.
Shelby 1963 20,846 Urban minor arterial Fau 4189 over Johns Creek
Shelby 1968 20,398 Urban minor arterial Fau 5156 over Sam Cooper Blvd.
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 14 10,557 287,466 0 0 0
Rural arterial 22 16,966 289,734 0 0 0
Rural minor arterial 9 12,377 84,121 1 630 8,449
Rural major collector 5 3,063 18,931 0 0 0
Rural minor collector 29 10,649 72,861 1 272 7,982
Rural local road 55 13,742 19,344 2 590 1,488
Urban Interstate 163 419,019 15,393,865 2 3,218 158,592
Urban freeway/expressway 76 142,152 3,644,509 2 1,924 90,638
Urban other principal arterial 174 299,283 5,393,936 10 36,856 324,532
Urban minor arterial 236 275,303 3,800,654 22 21,350 469,495
Urban collector 95 41,229 559,296 4 2,219 11,719
Urban local road 199 77,382 318,184 4 6,930 14,572
Total 1,077 1,321,722 29,882,901 48 73,988 1,087,467
Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 32 $126.5 874,590 56,424
Widening & rehabilitation 133 $191.0 3,570,348 139,212
Rehabilitation 206 $329.9 7,842,994 218,056
Deck rehabilitation/replacement 5 $135.0 198,542 82,795
Other structural work 5 $3.6 110,167 2,288
Total 381 $786.0 12,596,641 498,774

Data includes information for the following area(s): Shelby County

About the data:

Data and cost estimates are from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on July 3, 2023. 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 2022 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.

40
Compared to 41 in 2022

in the nation in % of structurally deficient bridges

1. West Virginia 20.0%
39. Maryland 5.0%
40. Tennessee 4.0%
41. Minnesota 4.0%

20
Compared to 20 in 2022

in the nation in # of structurally deficient bridges

1. Iowa 4,558
19. Wisconsin 943
20. Tennessee 898
21. Texas 708

28
Compared to 25 in 2022

in the nation in % of structurally deficient bridge deck area

1. Rhode Island 15.0%
27. Arkansas 5.0%
28. Tennessee 5.0%
29. Kentucky 5.0%
Full State Ranking

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  • Source: Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on July 3, 2023. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.

    ARTBA is a non-partisan federation whose primary goal is to aggressively grow and protect transportation infrastructure investment to meet the public and business demand for safe and efficient travel.

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