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 44 E

Over: LP 44

S 34 T 44 N R 3 E, St. Louis, MO

Built 2002 ADT: 7,908

IS 44 W

Over: LP 44

S 34 T 44 N R 3 E, St. Louis, MO

Built 2002 ADT: 7,908

MO 340 E

Over: IS 270

S 3 T 45 N R 5 E, St. Louis, MO

Built 2002 ADT: 93,142

MO 340 E

Over: CST WOODCREST EXECUTIVE

S 3 T 45 N R 5 E, St. Louis, MO

Built 2002 ADT: 702

JAMES S MCDONNELL

Over: IS 270

S 278 T 47 N R 3 E, St. Louis, MO

Built 2002 ADT: 63,110

IS 170 W

Over: OR 270

S 939 T 47 N R 6 E, St. Louis, MO

Built 2002 ADT: 7,910

RP IS270W TO IS170

Over: OR 270

S 939 T 47 N R 6 E, St. Louis, MO

Built 2002 ADT: 7,910

RP IS170W TO IS270

Over: OR 270

S 939 T 47 N R 6 E, St. Louis, MO

Built 2002 ADT: 3,955

RP IS170W TO IS270

Over: RP IS270E TO NORTH HANLE

S 939 T 47 N R 6 E, St. Louis, MO

Built 2002 ADT: 5,324

IS 270 E

Over: CST NORTH HANLEY RD

S 939 T 47 N R 6 E, St. Louis, MO

Built 2002 ADT: 28,443

IS 270 W

Over: CST NORTH HANLEY RD

S 939 T 47 N R 6 E, St. Louis, MO

Built 2002 ADT: 28,443

MO 340 E

Over: US 67

S 1 T 45 N R 5 E, St. Louis, MO

Built 2003 ADT: 12,433

ST LOUIS MILLS BLV

Over: MO 370

S 26 T 47 N R 5 E, St. Louis, MO

Built 2003 ADT: 22,847

US 61 S

Over: IS 255

S 34 T 44 N R 6 E, St. Louis, MO

Built 2004 ADT: 35,885

WEST PORT PLAZA DR

Over: RT D

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

Built 1978 ADT: 16,360

LACKLAND RD E

Over: IS 170

S 28 T 46 N R 6 E, St. Louis, MO

Built 1981 ADT: 27,139

CO SOR44E TO FENTO

Over: OR 44

S 22 T 44 N R 5 E, St. Louis, MO

Built 1981 ADT: 6,669

MO 367 S

Over: US 67

S 16 T 47 N R 7 E, St. Louis, MO

Built 2005 ADT: 14,257

MCKELVEY RD S

Over: IS 70

S 11 T 46 N R 5 E, St. Louis, MO

Built 1979 ADT: 48,911

MO 367 S

Over: CRD PARKER RD

S 21 T 47 N R 7 E, St. Louis, MO

Built 2005 ADT: 8,660

MO 367 N

Over: CRD REDMAN RD

S 28 T 47 N R 7 E, St. Louis, MO

Built 2005 ADT: 5,998

MO 367 S

Over: CRD REDMAN RD

S 28 T 47 N R 7 E, St. Louis, MO

Built 2005 ADT: 5,555

MO 367 S

Over: OR 270

S 28 T 47 N R 7 E, St. Louis, MO

Built 2005 ADT: 1,704

IS 270 E

Over: RP IS70E TO IS270E

S 729 T 46 N R 5 E, St. Louis, MO

Built 1979 ADT: 23,163

IS 270 W

Over: RP IS70E TO IS270E

S 729 T 46 N R 5 E, St. Louis, MO

Built 1979 ADT: 23,163

RP IS270W TO IS70E

Over: MO 180

S 131 T 46 N R 5 E, St. Louis, MO

Built 1982 ADT: 27,415

IS 270 E

Over: RP IS70W TO IS270W

S 729 T 46 N R 5 E, St. Louis, MO

Built 1979 ADT: 12,998

IS 270 W

Over: RP IS70W TO IS270W

S 729 T 46 N R 5 E, St. Louis, MO

Built 1979 ADT: 12,998

RP IS70E TO IS270E

Over: RP IS270E TO MO180

S 131 T 46 N R 5 E, St. Louis, MO

Built 1981 ADT: 7,492

IS 70 W

Over: RP IS70E TO IS270E

S 729 T 46 N R 5 E, St. Louis, MO

Built 1978 ADT: 23,163

IS 70 E

Over: RP IS70E TO IS270E

S 729 T 46 N R 5 E, St. Louis, MO

Built 1978 ADT: 23,163

IS 70 W

Over: RP IS70W TO IS270W

S 729 T 46 N R 5 E, St. Louis, MO

Built 1978 ADT: 12,998

IS 70 E

Over: RP IS70W TO IS270W

S 729 T 46 N R 5 E, St. Louis, MO

Built 1978 ADT: 12,998

RP IS270E TO IS70W

Over: IS 270

S 131 T 46 N R 5 E, St. Louis, MO

Built 1982 ADT: 80,758

RP IS270W TO IS70E

Over: RP MO180 TO IS270W

S 131 T 46 N R 5 E, St. Louis, MO

Built 1982 ADT: 6,741

RP IS270W TO IS70E

Over: IS 70

S 131 T 46 N R 5 E, St. Louis, MO

Built 1982 ADT: 84,053

NATURAL BRIDGE RD

Over: US 67

S 12 T 46 N R 5 E, St. Louis, MO

Built 2006 ADT: 9,335

MCKELVEY RD S

Over: IS 270

S 729 T 46 N R 5 E, St. Louis, MO

Built 1979 ADT: 69,810

IS 170 W

Over: MO 340

S 5 T 45 N R 6 E, St. Louis, MO

Built 2006 ADT: 5,284

IS 170 E

Over: MO 340

S 5 T 45 N R 6 E, St. Louis, MO

Built 2006 ADT: 5,284

NEW JAMESTOWN RD E

Over: MO 367

S 16 T 47 N R 7 E, St. Louis, MO

Built 2006 ADT: 14,715

IS 170 E

Over: OR 270

S 939 T 47 N R 6 E, St. Louis, MO

Built 1978 ADT: 7,910

RP EOR367 TO MO367

Over: MO 367

S 16 T 47 N R 7 E, St. Louis, MO

Built 2006 ADT: 14,715

DOUGHERTY FERRY RD

Over: IS 270

S 3 T 44 N R 5 E, St. Louis, MO

Built 2007 ADT: 104,774

MO 231 S

Over: IS 255

S 1 T 43 N R 6 E, St. Louis, MO

Built 2007 ADT: 51,346

BOWLES AVE S

Over: IS 44

S 21 T 44 N R 5 E, St. Louis, MO

Built 1981 ADT: 48,007

RP IS64W TO IS170W

Over: RP HANLEY DR TO IS64W

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

Built 2007 ADT: 9,581

BELLEVUE AVE S

Over: IS 64

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

Built 2008 ADT: 71,559

BOLAND PL S

Over: IS 64

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

Built 2008 ADT: 79,962

S MCKNIGHT RD S

Over: IS 64

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

Built 2008 ADT: 61,811

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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Compiled by PlainBridges, Independent data publisher

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.