St. Louis County, MO

912 public highway bridges

St. Louis County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, St. Louis County, Missouri contains 912 public highway bridges. Roughly 21.5% are rated “Good,” 42.2% “Fair,” and 3.9% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

912

Total Bridges

21.5%

Good

42.2%

Fair

3.9%

Poor Condition

Condition Distribution

Good

21.5% (196)

Fair

42.2% (385)

Poor

3.9% (36)

All Bridges (912)

Sort:

IS 255 N

Over: RP IS270W TO IS55N

S 34 T 43 N R 6 E, St. Louis, MO

Built 1964 ADT: 12,696

IS 255 S

Over: IS 55

S 34 T 43 N R 6 E, St. Louis, MO

Built 1964 ADT: 62,787

RP IS270W TO IS55N

Over: IS 55

S 34 T 43 N R 6 E, St. Louis, MO

Built 1964 ADT: 76,905

RP IS44E TO IS270E

Over: MO 366

S 14 T 55 N R 5 E, St. Louis, MO

Built 1996 ADT: 9,784

MO 364 E

Over: IS 270

S 1312 T 46 N R 5 E, St. Louis, MO

Built 1966 ADT: 87,171

MO 364 W

Over: IS 270

S 1312 T 46 N R 5 E, St. Louis, MO

Built 1966 ADT: 68,802

US 50 E

Over: IS 255

S 35 T 44 N R 6 E, St. Louis, MO

Built 1969 ADT: 51,346

GEYER RD S

Over: IS 44

S 14 T 44 N R 5 E, St. Louis, MO

Built 1996 ADT: 44,242

BOONES CROSSING RD

Over: IS 64

S 125 T 45 N R 4 E, St. Louis, MO

Built 1999 ADT: 53,025

BIG BEND RD E

Over: MO 141

S 7 T 44 N R 5 E, St. Louis, MO

Built 2000 ADT: 25,147

CRESCENT AVE E

Over: MO 141

S 7 T 44 N R 5 E, St. Louis, MO

Built 2000 ADT: 25,147

IS 70 E

Over: CST AIRFLIGHT DR

S 168 T 46 N R 6 E, St. Louis, MO

Built 2000 ADT: 10,084

IS 70 E

Over: CST CYPRESS RD

S 24 T 46 N R 6 E, St. Louis, MO

Built 2000 ADT: 5,050

IS 70 E

Over: CST SPRINGDALE AVE

S 15 T 46 N R 6 E, St. Louis, MO

Built 2000 ADT: 1,984

IS 70 W

Over: CST SPRINGDALE AVE

S 15 T 46 N R 6 E, St. Louis, MO

Built 2000 ADT: 1,984

IS 70 E

Over: CST JENNINGS STATION RD

S 19 T 46 N R 7 E, St. Louis, MO

Built 2001 ADT: 17,056

RT U S

Over: IS 70

S 24 T 46 N R 6 E, St. Louis, MO

Built 2001 ADT: 64,386

MO 100 W

Over: RP IS270W TO MO100E

S 34 T 45 N R 5 E, St. Louis, MO

Built 1999 ADT: 6,504

IS 70 E

Over: RT N

S 14 T 46 N R 6 E, St. Louis, MO

Built 2001 ADT: 7,316

IS 70 W

Over: RT N

S 14 T 46 N R 6 E, St. Louis, MO

Built 2001 ADT: 7,316

BERMUDA DR S

Over: IS 70

S 24 T 46 N R 6 E, St. Louis, MO

Built 2001 ADT: 75,759

SEVEN PINES DR S

Over: MO 364

S 29 T 46 N R 5 E, St. Louis, MO

Built 1999 ADT: 29,109

AMIOT DR E

Over: MO 364

S 29 T 46 N R 5 E, St. Louis, MO

Built 1999 ADT: 29,109

RP N HANLEY RD TO

Over: RP IS70E TO RTNN

S 14 T 46 N R 6 E, St. Louis, MO

Built 2001 ADT: 5,462

NORTH HANLEY RD S

Over: IS 70

S 3082 T 46 N R 6 E, St. Louis, MO

Built 2001 ADT: 58,687

RIVER VALLEY DR S

Over: MO 364

S 24 T 46 N R 4 E, St. Louis, MO

Built 2001 ADT: 31,204

MO 364 E

Over: CST CREVE COEUR MILL RD

S 3094 T 46 N R 5 E, St. Louis, MO

Built 2001 ADT: 2,634

MO 364 W

Over: CST CREVE COEUR MILL RD

S 3094 T 46 N R 5 E, St. Louis, MO

Built 2001 ADT: 2,634

MO 364 E

Over: RP MO364E TO MO141N

S 19 T 46 N R 5 E, St. Louis, MO

Built 2001 ADT: 11,161

MO 364 W

Over: RP MO364E TO MO141N

S 19 T 46 N R 5 E, St. Louis, MO

Built 2001 ADT: 11,161

RP BERMUDA RD TO I

Over: RT N

S 14 T 46 N R 6 E, St. Louis, MO

Built 2001 ADT: 7,316

IS 270 E

Over: CST WEST PORT PLAZA DR

S 1312 T 46 N R 5 E, St. Louis, MO

Built 1965 ADT: 10,666

IS 64 E

Over: MO 340

S 415 T 45 N R 4 E, St. Louis, MO

Built 1968 ADT: 11,321

IS 64 W

Over: MO 340

S 415 T 45 N R 4 E, St. Louis, MO

Built 1968 ADT: 10,727

IS 44 E

Over: US 50

S 12 T 44 N R 5 E, St. Louis, MO

Built 1967 ADT: 14,603

IS 44 W

Over: US 50

S 12 T 44 N R 5 E, St. Louis, MO

Built 1967 ADT: 14,603

HOLMES AVE S

Over: IS 44

S 7 T 44 N R 6 E, St. Louis, MO

Built 1967 ADT: 53,144

SAPPINGTON RD S

Over: IS 44

S 6 T 44 N R 6 E, St. Louis, MO

Built 1969 ADT: 54,997

IS 44 E

Over: CST BERRY RD

S 5 T 44 N R 6 E, St. Louis, MO

Built 1969 ADT: 4,625

IS 44 W

Over: CST BERRY RD

S 5 T 44 N R 6 E, St. Louis, MO

Built 1969 ADT: 4,625

SO ROCK HILL RD S

Over: IS 44

S 5 T 44 N R 6 E, St. Louis, MO

Built 1969 ADT: 51,725

IS 44 E

Over: CST ELM AVE

S 4 T 44 N R 6 E, St. Louis, MO

Built 1969 ADT: 22,293

IS 44 W

Over: CST ELM AVE

S 4 T 44 N R 6 E, St. Louis, MO

Built 1969 ADT: 22,293

EDGAR RD S

Over: IS 44

S 4 T 44 N R 6 E, St. Louis, MO

Built 1969 ADT: 53,064

MURDOCH AVE E

Over: IS 44

S 34 T 45 N R 6 E, St. Louis, MO

Built 1969 ADT: 37,000

IS 44 E

Over: CST LACLEDE STATION RD

S 34 T 45 N R 6 E, St. Louis, MO

Built 1969 ADT: 22,587

IS 44 W

Over: CST LACLEDE STATION RD

S 34 T 45 N R 6 E, St. Louis, MO

Built 1969 ADT: 22,587

SHREWSBURY AVE S

Over: RP IS44W TO SHREWSBURY A

S 34 T 45 N R 6 E, St. Louis, MO

Built 1969 ADT: 4,154

LEWIS RD S

Over: IS 44

S 33 T 44 N R 4 E, St. Louis, MO

Built 1968 ADT: 27,863

IS 270 W

Over: MO 180

S 131 T 47 N R 5 E, St. Louis, MO

Built 1960 ADT: 27,415

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.