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)

IS 44 W

Fair

Over: BNSF RR

S 35 T 45 N R 6 E, St. Louis, MO

Built 2016 Load: 63.0 t ADT: 43,460

MCKNIGHT RD

Fair

Over: DEER CR

S 28 T 45 N R 6 E, St. Louis, MO

Built 2004 Load: 64.8 t ADT: 18,796

DIETRICH RD

Fair

Over: GRAND GLAIZE CR

S 32 T 45 N R 5 E, St. Louis, MO

Built 1997 Load: 65.7 t ADT: 4,077

DOUGHERTY FERRY RD

Fair

Over: GRAND GLAIZE CR

S 4 T 44 N R 5 E, St. Louis, MO

Built 1993 Load: 65.7 t ADT: 26,967

KEHRS MILL ROAD

Fair

Over: BR OF SHOTWELL CR

S 20 T 45 N R 4 E, St. Louis, MO

Built 1993 Load: 65.7 t ADT: 6,849

STRECKER RD

Fair

Over: CAULKS CR

S 30 T 45 N R 4 E, St. Louis, MO

Built 2003 Load: 65.7 t ADT: 2,290

PIERSIDE LN

Fair

Over: BR OF KIEFER CR

S 5 T 44 N R 4 E, St. Louis, MO

Built 1988 Load: 66.6 t ADT: 4,250

SAPPINGTON RD

Fair

Over: MULBERRY CR

S 17 T 44 N R 6 E, St. Louis, MO

Built 1959 Load: 66.6 t ADT: 4,874

N HANLEY RD

Fair

Over: METROLINK

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

Built 1992 Load: 66.6 t ADT: 15,183

NEW HALLS FERRY RD

Fair

Over: COLDWATER CR

S 4 T 47 N R 6 E, St. Louis, MO

Built 1968 Load: 66.6 t ADT: 9,162

KIENLEN AVE

Fair

Over: TRRA OF ST.LOUIS R

S 36 T 46 N R 6 E, St. Louis, MO

Built 1983 Load: 67.5 t ADT: 14,224

GRAVOIS RD

Fair

Over: CR TO MERAMEC RVR

S 3116 T 44 N R 5 E, St. Louis, MO

Built 1925 Load: 67.5 t ADT: 9,270

DOUGHERTY FERRY RD

Fair

Over: BR OF GRAND GLAIZE

S 4 T 44 N R 5 E, St. Louis, MO

Built 2000 Load: 67.5 t ADT: 23,339

BIG BEND BLVD

Fair

Over: DEER CR

S 27 T 45 N R 6 E, St. Louis, MO

Built 1959 Load: 68.4 t ADT: 25,659

LACLEDE STA. RD

Fair

Over: DEER CR

S 28 T 45 N R 6 E, St. Louis, MO

Built 1974 Load: 69.3 t ADT: 34,312

DIELMAN RD

Fair

Over: RVR DES PERES

S 31 T 46 N R 6 E, St. Louis, MO

Built 1970 Load: 70.2 t ADT: 7,790

RT P S

Fair

Over: DEER CR

S 1953 T 44 N R 6 E, St. Louis, MO

Built 1937 Load: 70.2 t ADT: 15,770

BOWLES AVE

Fair

Over: FENTON CR

S 32 T 44 N R 5 E, St. Louis, MO

Built 1979 Load: 74.7 t ADT: 7,345

MCBRIDE POINT DR

Fair

Over: BR OF CAULKS CR

S 30 T 45 N R 4 E, St. Louis, MO

Built 1984 Load: 79.2 t ADT: 1,220

BARRETT STATION RD

Fair

Over: SUGAR CR

S 4 T 44 N R 5 E, St. Louis, MO

Built 1935 Load: 80.1 t ADT: 2,615

MO 141 N

Fair

Over: TRIB TO FEE FEE CR

S 18 T 46 N R 5 E, St. Louis, MO

Built 2003 Load: 85.5 t ADT: 8,981

MO 141 S

Fair

Over: TRIB TO FEE FEE CR

S 18 T 46 N R 5 E, St. Louis, MO

Built 2003 Load: 85.5 t ADT: 8,981

RT T E

Fair

Over: WILD HORSE CR

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

Built 1940 Load: 87.3 t ADT: 2,973

KEHRS MILL RD E

Fair

Over: BONHOMME CR

S 7 T 45 N R 4 E, St. Louis, MO

Built 2012 Load: 90.9 t ADT: 18,432

BIG BEND RD

Fair

Over: FISHPOT CR

S 12 T 44 N R 4 E, St. Louis, MO

Built 1967 Load: 99.9 t ADT: 28,190

IS 64 E

Fair

Over: HAMPTON CR

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

Built 1957 Load: 99.9 t ADT: 158,935

MO 100 E

Fair

Over: FOX CR

S 19 T 44 N R 3 E, St. Louis, MO

Built 1977 Load: 99.9 t ADT: 10,728

IS 64 E

Fair

Over: E FK DEER CR

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

Built 1957 Load: 99.9 t ADT: 158,935

TORERO LN

Fair

Over: STORMWATER CR

S 4 T 46 N R 7 E, St. Louis, MO

Built 1987 Load: 99.9 t ADT: 390

IS 55 S

Fair

Over: MATTESE CR

S 4 T 43 N R 6 E, St. Louis, MO

Built 1964 Load: 99.9 t ADT: 153,270

NEWPORT RD

Good

Over: SHADY GROVE CR

S 1953 T 45 N R 6 E, St. Louis, MO

Built 1965 Load: 11.7 t ADT: 5,000

W BRUNO AVE

Good

Over: BLACK CREEK BR

S 2484 T 45 N R 6 E, St. Louis, MO

Built 1976 Load: 20.7 t ADT: 2,500

BELLERIVE EST DR

Good

Over: SMITH CR

S 1923 T 45 N R 5 E, St. Louis, MO

Built 1970 Load: 22.5 t ADT: 550

ETZEL AVE

Good

Over: BR RVR DES PERES

S 1 T 45 N R 6 E, St. Louis, MO

Built 1987 Load: 22.5 t ADT: 1,670

ASHBY RD

Good

Over: ST LOUIS SW RR

S 31 T 46 N R 6 E, St. Louis, MO

Built 1968 Load: 25.2 t ADT: 9,696

HORAN DR

Good

Over: TRIB MERAMEC RVR

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

Built 1975 Load: 27.0 t ADT: 9,500

MARSHALL RD

Good

Over: BNSF RR

S 11 T 44 N R 5 E, St. Louis, MO

Built 1952 Load: 27.9 t ADT: 5,030

MO 100 E

Good

Over: BLACK CR

S 27 T 44 N R 6 E, St. Louis, MO

Built 2021 Load: 28.8 t ADT: 13,887

RP IS270W TO IS44W

Good

Over: RAMP 3A-1

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

Built 2018 Load: 29.7 t ADT: 15,439

ST ANTHONY LN

Good

Over: FOUNTAIN CR

S 1202 T 47 N R 6 E, St. Louis, MO

Built 2018 Load: 30.6 t ADT: 5,000

WILD HORSE CR RD

Good

Over: CAULKS CR

S 8 T 45 N R 4 E, St. Louis, MO

Built 2010 Load: 31.5 t ADT: 9,004

OLD BALLWIN RD

Good

Over: FISHPOT CR

S 34 T 45 N R 4 E, St. Louis, MO

Built 1994 Load: 32.4 t ADT: 3,000

GRAHAM RD

Good

Over: BR OF COLDWATER CR

S 3 T 46 N R 6 E, St. Louis, MO

Built 1995 Load: 32.4 t ADT: 1,000

STRASSNER RD

Good

Over: BLACK CR

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

Built 1984 Load: 32.4 t ADT: 5,000

BAXTER FOREST RIDG

Good

Over: BR OF CAULK CR

S 16 T 45 N R 4 E, St. Louis, MO

Built 1987 Load: 32.4 t ADT: 513

SULPHUR SPRING RD

Good

Over: BR OF FISHPOT CR

S 12 T 44 N R 4 E, St. Louis, MO

Built 1988 Load: 32.4 t ADT: 5,896

CONWAY RD

Good

Over: SMITH CR

S 16 T 45 N R 5 E, St. Louis, MO

Built 1996 Load: 32.4 t ADT: 3,600

MONTEVALE CT

Good

Over: YARNELL CR

S 27 T 44 N R 5 E, St. Louis, MO

Built 1991 Load: 32.4 t ADT: 300

PADDOCK DR

Good

Over: PADDOCK CR

S 1202 T 47 N R 6 E, St. Louis, MO

Built 1995 Load: 32.4 t ADT: 4,000

HIGHLAND AVE

Good

Over: UP RR

S 10 T 44 N R 5 E, St. Louis, MO

Built 1996 Load: 32.4 t ADT: 800

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

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.