Missouri Congressional District 6


  • Of the 9,324 bridges in the counties of this district, 926, or 9.9 percent, are classified as structurally deficient. This means one of the key elements is in poor or worse condition.
  • This is down from 1,081 bridges classified as structurally deficient in 2021.
  • Repairs are needed on 1,618 bridges in the district, which will cost an estimated $957.3 million.
  • This compares to 1,828 bridges that needed work in 2021.
  • The state has committed $43.9 million in IIJA bridge formula funds to support 130 projects in the District.

Top Most Traveled Structurally Deficient Bridges in Missouri

County Year Built Daily Crossings Type of Bridge Location
Jackson 1969 104,024 Urban minor arterial Rt W E over Br Blue Rvr
Jackson 1964 96,753 Urban Interstate IS 435 S over Grave Cr
Jackson 1959 57,907 Urban Interstate IS 70 W over Kct RR
Clay 1957 57,469 Urban Interstate IS 29 N over Rp US169S to Is29S, US 1
Jackson 1960 45,701 Urban Interstate IS 70 W over CST Van Brunt Blvd
Jackson 1968 42,076 Urban Interstate IS 435 S over UP RR, Kct RR
Platte 1958 38,357 Rural Interstate IS 29 S over Owl Cr
Jackson 1961 36,578 Urban freeway/expressway US 71 S over Rt W
Jackson 2001 31,935 Urban Interstate IS 435 N over IS 49, Rp US71S to Is470
Jackson 1979 30,000 Urban local road Arlington St over Rock Cr
Platte 1959 26,656 Urban Interstate IS 29 N over Platte Rvr
Platte 1977 24,918 Urban Interstate IS 435 S over First Cr
Clay 1983 24,752 Urban Interstate IS 435 S over Fk of Wilkerson Cr
Clay 1956 21,563 Urban freeway/expressway US 169 N over BNSF RR
Buchanan 1961 20,009 Urban freeway/expressway US 36 E over Lp 29
Platte 1950 18,026 Urban Interstate IS 29 S over Platte Rvr Ovrfl
Marion 2000 17,638 Urban Interstate IS 72 E over Mississippi Rvr, CST 410
Buchanan 1951 16,400 Urban freeway/expressway US 36 E over IS 229, CST 6th St, Is
Jackson 1949 16,351 Urban freeway/expressway Mo 291 N over Missouri Rvr
Clay 1969 16,197 Urban Interstate Rp Is35S to Is435S over IS 35
Jackson 1958 15,796 Urban other principal arterial Roanoke Pkwy over Brush Cr
Platte 1968 13,459 Urban minor arterial Mo 9 S over Burlington Cr
Macon 1971 12,582 Urban other principal arterial US 63 S over US 36
Andrew 1953 11,937 Rural Interstate IS 29 N over Nodaway Rvr
Buchanan 1973 10,927 Urban other principal arterial Rt Ac S over US 36

Bridge Inventory: Missouri

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 91 106,282 1,072,969 3 4,889 58,931
Rural arterial 440 450,532 2,307,382 18 31,966 80,066
Rural minor arterial 244 162,552 559,079 12 8,722 22,771
Rural major collector 1,258 474,064 868,184 93 39,532 61,286
Rural minor collector 282 66,558 64,830 22 7,280 5,183
Rural local road 5,385 784,341 277,375 685 67,096 36,972
Urban Interstate 419 850,803 13,517,290 19 110,902 495,549
Urban freeway/expressway 230 317,422 5,121,811 6 20,849 117,446
Urban other principal arterial 124 171,969 1,341,065 6 6,860 65,511
Urban minor arterial 323 397,152 2,733,445 17 28,120 182,821
Urban collector 186 127,482 612,218 16 10,041 38,501
Urban local road 342 114,337 519,084 29 8,606 64,101
Total 9,324 4,023,494 28,994,732 926 344,862 1,229,138

Proposed Bridge Work

Type of Work Number of Bridges Cost to Repair
(in millions)
Daily Crossings Area of Bridges
(sq. meters)
Bridge replacement 820 $468 805,128 239,607
Widening & rehabilitation 0 $0 0 0
Rehabilitation 785 $484 3,416,115 364,209
Deck rehabilitation/replacement 0 $0 0 0
Other structural work 13 $6 3,805 4,087
Total 1,618 $957 4,225,048 607,902

About the data:

Data includes information for the following area(s): Adair, Andrew, Atchison, Audrain, Buchanan, Caldwell, Carroll, Chariton, Clark, Clay, Clinton, Daviess, DeKalb, Gentry, Grundy, Harrison, Holt, Jackson, Knox, Lewis, Lincoln, Linn, Livingston, Macon, Marion, Mercer, Monroe, Nodaway, Pike, Platte, Putnam, Ralls, Randolph, Ray, Schuyler, Scotland, Shelby, Sullivan, Worth

Data and cost estimates are from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on August 20, 2024. 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 2023 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.

14
Compared to 13 in 2024

in the nation in % of structurally deficient bridges

1. Iowa 19.0%
13. Massachusetts 9.0%
14. Missouri 9.0%
15. New Hampshire 8.0%

4
Compared to 4 in 2024

in the nation in # of structurally deficient bridges

1. Iowa 4,424
3. Illinois 2,563
4. Missouri 2,163
5. New York 1,741

11
Compared to 12 in 2024

in the nation in % of structurally deficient bridge deck area

1. West Virginia 13.0%
10. Wyoming 8.0%
11. Missouri 8.0%
12. Michigan 7.0%
Full State Ranking

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  • Source: Data is from the Federal Highway Administration (FHWA) National Bridge Inventory (NBI), downloaded on August 20, 2024. Note that specific conditions on bridges may have changed as a result of recent work or updated inspections.

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