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 64 E

Over: US 61

S 2675 T 45 N R 5 E, St. Louis, MO

Built 2008 ADT: 12,488

HIGHLAND TER N

Over: IS 64

S 23 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 73,001

RP IS170E TO IS64W

Over: RP IS170E TO BRENTWOOD B

S 16 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 327

RP IS64E TO IS170W

Over: IS 64

S 21 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 61,811

RP IS170E TO IS64E

Over: IS 170

S 21 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 39,052

SPOEDE RD S

Over: IS 64

S 13 T 45 N R 5 E, St. Louis, MO

Built 2008 ADT: 72,743

IS 64 E

Over: CST LACLEDE STATION RD

S 22 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 2,216

BIG BEND BLVD E

Over: IS 64

S 23 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 78,973

MC CUTCHEON RD S

Over: IS 64

S 20 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 61,811

IS 64 E

Over: CST CLAYTON RD

S 18 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 8,747

RP IS170E TO IS64W

Over: CST S BRENTWOOD BLVD

S 16 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 22,282

HANLEY RD S

Over: IS 64

S 22 T 45 N R 20 W, St. Louis, MO

Built 2008 ADT: 79,962

RP BRENTWOOD BLVD

Over: IS 170

S 21 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 39,052

RP HANLEY DR TO IS

Over: IS 170

S 21 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 39,052

IS 64 E

Over: IS 170

S 21 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 35,480

IS 64 E

Over: CST CLAYTONIA TER

S 22 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 948

IS 64 E

Over: CST S BRENTWOOD BLVD

S 21 T 45 N R 6 E, St. Louis, MO

Built 2008 ADT: 24,450

UNION RD E

Over: IS 55

S 24 T 44 N R 6 E, St. Louis, MO

Built 2009 ADT: 64,213

IS 270 E

Over: CST DORSETT RD

S 22 T 46 N R 5 E, St. Louis, MO

Built 2009 ADT: 15,043

PVT MARITZ ENT S

Over: IS 44

S 1983 T 44 N R 5 E, St. Louis, MO

Built 1983 ADT: 46,465

RT AB E

Over: MO 141

S 109 T 45 N R 5 E, St. Louis, MO

Built 2011 ADT: 15,992

RT AB E

Over: CST N WOODS MILL RD

S 109 T 45 N R 5 E, St. Louis, MO

Built 2012 ADT: 4,962

MO 340 E

Over: MO 141

S 367 T 46 N R 5 E, St. Louis, MO

Built 2011 ADT: 6,393

RP IS270E TO MO364

Over: IS 270

S 28 T 46 N R 5 E, St. Louis, MO

Built 2010 ADT: 68,802

RP IS270E TO MO364

Over: MO 364

S 28 T 46 N R 5 E, St. Louis, MO

Built 2010 ADT: 24,866

CLAYTON RD E

Over: MO 141

S 24 T 45 N R 4 E, St. Louis, MO

Built 1987 ADT: 18,076

RP MO141S TO CLAYT

Over: OR 141

S 24 T 45 N R 4 E, St. Louis, MO

Built 1989 ADT: 4,434

IS 64 W

Over: MO 141

S 13 T 45 N R 4 E, St. Louis, MO

Built 1985 ADT: 31,882

OR 64 E

Over: MO 141

S 13 T 45 N R 4 E, St. Louis, MO

Built 1985 ADT: 31,882

DELMAR BLVD E

Over: IS 170

S 4 T 45 N R 6 E, St. Louis, MO

Built 2011 ADT: 47,949

MO 141 N

Over: OR 44

S 19 T 44 N R 5 E, St. Louis, MO

Built 1984 ADT: 984

MO 141 S

Over: OR 44

S 19 T 44 N R 5 E, St. Louis, MO

Built 1984 ADT: 984

MO 141 S

Over: CST WATER WORKS DR

S 433 T 46 N R 5 E, St. Louis, MO

Built 2012 ADT: 6,002

RP CHESTERFIELD AI

Over: IS 64

S 371 T 45 N R 3 E, St. Louis, MO

Built 2013 ADT: 37,898

JAMES S MCDONNELL

Over: IS 70

S 656 T 46 N R 6 E, St. Louis, MO

Built 1984 ADT: 69,537

CHESTERFIELD PKWY

Over: IS 64

S 123 T 45 N R 4 E, St. Louis, MO

Built 2013 ADT: 50,214

MISSOURI BOTTOM RD

Over: IS 270

S 2093 T 47 N R 5 E, St. Louis, MO

Built 1990 ADT: 64,017

RP LAMBERT INTL BL

Over: IS 70

S 656 T 46 N R 6 E, St. Louis, MO

Built 1984 ADT: 69,537

IS 44 E

Over: MO 109

S 2071 T 44 N R 4 E, St. Louis, MO

Built 1986 ADT: 12,280

MO 109 S

Over: CST E FIRST ST

S 2071 T 44 N R 4 E, St. Louis, MO

Built 1987 ADT: 400

CENTRAL AVE S

Over: IS 44

S 2071 T 44 N R 3 E, St. Louis, MO

Built 1989 ADT: 29,631

WOODFORD WAY S

Over: IS 270

S 2083 T 46 N R 5 E, St. Louis, MO

Built 1988 ADT: 58,349

GIST RD E

Over: IS 270

S 130 T 46 N R 5 E, St. Louis, MO

Built 1988 ADT: 58,349

RP MO141N TO IS44W

Over: MO 141

S 1983 T 44 N R 5 E, St. Louis, MO

Built 2016 ADT: 30,753

RP MO141S TO IS44E

Over: RP OR44W TO MO141S

S 1983 T 44 N R 5 E, St. Louis, MO

Built 2016 ADT: 12,218

MASON RD S

Over: IS 64

S 17 T 45 N R 5 E, St. Louis, MO

Built 1987 ADT: 76,943

RP IS64W TO MO141S

Over: MO 141

S 13 T 45 N R 4 E, St. Louis, MO

Built 1985 ADT: 24,333

IS 64 E

Over: MO 141

S 13 T 45 N R 4 E, St. Louis, MO

Built 1985 ADT: 31,882

MARYVILLE CENTRE D

Over: IS 64

S 18 T 45 N R 5 E, St. Louis, MO

Built 1985 ADT: 70,697

IS 44 W

Over: CST YARNELL RD

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

Built 2018 ADT: 12,631

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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