St. Louis County, MO

912 public highway bridges

St. Louis County Bridge Snapshot

St. Louis County, Missouri contains 912 public highway bridges in the FHWA National Bridge Inventory. Roughly 21.5% are rated “Good,” 42.2% “Fair,” 3.9% “Poor,” and 3.9% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in MO are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

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

912
Total Bridges
21.5%
Good
3.9%
Poor
3.9%
Structurally Deficient

Condition Distribution

Good
21.5% (196)
Fair
42.2% (385)
Poor
3.9% (36)
SD
3.9% (36)

All Bridges (912)

IS 44 E

Fair

Over: BR GRAVOIS CR

S 12 T 44 N R 6 E, St. Louis, MO

Built 1969 Load: 52.2 t ADT: 108,141

RIVERVIEW DR

Fair

Over: WATKINS CR

S 36 T 47 N R 7 E, St. Louis, MO

Built 1947 Load: 52.2 t ADT: 3,955

WASHINGTON ST

Fair

Over: COLD WATER CR

S 28 T 47 N R 6 E, St. Louis, MO

Built 1930 Load: 52.2 t ADT: 17,556

MO 30 E

Fair

Over: SUNSET HILL CR

S 373 T 44 N R 5 E, St. Louis, MO

Built 1968 Load: 52.2 t ADT: 41,409

MO 30 E

Fair

Over: FENTON CR

S 373 T 44 N R 5 E, St. Louis, MO

Built 1970 Load: 52.2 t ADT: 34,987

KOCH RD S

Fair

Over: MARTIGNEY CR

S 3119 T 43 N R 7 E, St. Louis, MO

Built 1976 Load: 52.2 t ADT: 4,433

MO 115 S

Fair

Over: MALINE CR

S 48 T 46 N R 6 E, St. Louis, MO

Built 1979 Load: 52.2 t ADT: 8,904

RP MO115N TO IS170

Fair

Over: MALINE CR

S 48 T 46 N R 6 E, St. Louis, MO

Built 1979 Load: 52.2 t ADT: 2,921

TOPPING RD N

Fair

Over: DITCH

S 28 T 45 N R 5 E, St. Louis, MO

Built 2004 Load: 52.2 t ADT: 2,021

MO 141 S

Fair

Over: MARYVILLE CR

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

Built 2010 Load: 52.2 t ADT: 31,692

MO 141 S

Fair

Over: CREVE COEUR CR

S 367 T 45 N R 5 E, St. Louis, MO

Built 2012 Load: 52.2 t ADT: 12,881

MO 109 S

Fair

Over: CLIFTY CR

S 31 T 44 N R 4 E, St. Louis, MO

Built 1988 Load: 52.2 t ADT: 24,333

US 67 S

Fair

Over: COLDWATER BR

S 939 T 45 N R 5 E, St. Louis, MO

Built 1989 Load: 52.2 t ADT: 20,336

MO 109 S

Fair

Over: POND CR

S 24 T 44 N R 3 E, St. Louis, MO

Built 1997 Load: 52.2 t ADT: 14,768

ALT RD S

Fair

Over: POND CR

S 24 T 44 N R 3 E, St. Louis, MO

Built 1997 Load: 52.2 t ADT: 923

IS 270 E

Fair

Over: MATTESE CR

S 1998 T 44 N R 6 E, St. Louis, MO

Built 1967 Load: 52.2 t ADT: 167,402

MARSHALL RD

Fair

Over: GRAND GLAIZE CR

S 16 T 44 N R 5 E, St. Louis, MO

Built 1981 Load: 53.1 t ADT: 4,171

PENNSYLVANIA AVE

Fair

Over: RVR DES PERES

S 378 T 45 N R 6 E, St. Louis, MO

Built 1996 Load: 53.1 t ADT: 750

GREGORY LN S

Fair

Over: FENTON CR

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

Built 1997 Load: 53.1 t ADT: 224

IS 55 N

Fair

Over: CRD BUTLER HILL RD

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

Built 1995 Load: 53.1 t ADT: 65,365

IS 55 S

Fair

Over: CRD BUTLER HILL RD

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

Built 1995 Load: 53.1 t ADT: 76,365

IS 44 E

Fair

Over: WILLIAMS CR

S 879 T 44 N R 4 E, St. Louis, MO

Built 1960 Load: 53.1 t ADT: 40,274

WILDHORSE PKWY DR

Fair

Over: BONHOMME CR

S 479 T 45 N R 3 E, St. Louis, MO

Built 1989 Load: 54.0 t ADT: 3,556

CLAYTON RD

Fair

Over: BLACK CR

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

Built 1987 Load: 54.0 t ADT: 12,520

SCHUETZ RD

Fair

Over: TRIB OF FEE FEE CR

S 35 T 46 N R 5 E, St. Louis, MO

Built 1997 Load: 54.0 t ADT: 8,070

US 67 S

Fair

Over: BNSF RR

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

Built 2002 Load: 54.0 t ADT: 10,641

GRAHAM RD

Fair

Over: FOUNTAIN CR

S 28 T 47 N R 6 E, St. Louis, MO

Built 2010 Load: 54.0 t ADT: 21,018

OLD JAMESTOWN RD

Fair

Over: COLDWATER CR

S 17 T 47 N R 7 E, St. Louis, MO

Built 1987 Load: 54.9 t ADT: 2,457

RT D E

Fair

Over: UP RR

S 25 T 46 N R 5 E, St. Louis, MO

Built 2004 Load: 54.9 t ADT: 16,360

WOODS RD

Fair

Over: HAMILTON CR

S 14 T 44 N R 3 E, St. Louis, MO

Built 2016 Load: 54.9 t ADT: 1,000

KEHRS MILL RD

Fair

Over: CAULKS CR

S 18 T 45 N R 4 E, St. Louis, MO

Built 1995 Load: 55.8 t ADT: 5,529

BELLEFONTAINE RD

Fair

Over: MALINE CR

S 9 T 46 N R 7 E, St. Louis, MO

Built 1922 Load: 56.7 t ADT: 12,412

AVALON HILLS DR

Fair

Over: N TRIB OF WILLIAMS

S 30 T 44 N R 5 E, St. Louis, MO

Built 1999 Load: 56.7 t ADT: 2,019

NORTH AND SOUTH RD

Fair

Over: BR OF RVR DES PERE

S 3 T 45 N R 6 E, St. Louis, MO

Built 1959 Load: 56.7 t ADT: 3,839

FEE FEE RD

Fair

Over: MIDLAND CR

S 23 T 46 N R 5 E, St. Louis, MO

Built 2007 Load: 56.7 t ADT: 8,394

OR 64 W

Fair

Over: CREVE COEUR CR

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

Built 1988 Load: 56.7 t ADT: 4,272

PATTERSON RD

Fair

Over: NEW HALLS FERRY CR

S 11 T 47 N R 6 E, St. Louis, MO

Built 1998 Load: 57.6 t ADT: 19,702

BUCKHURST DR

Fair

Over: KIEFER CR

S 9 T 44 N R 4 E, St. Louis, MO

Built 1994 Load: 58.5 t ADT: 1,360

CHARBONIER RD

Fair

Over: BR OF COWMIRE CR

S 24 T 47 N R 5 E, St. Louis, MO

Built 2003 Load: 58.5 t ADT: 6,246

RT D E

Fair

Over: BR RVR DES PERES

S 35 T 46 N R 6 E, St. Louis, MO

Built 2012 Load: 58.5 t ADT: 13,500

LUCAS-HUNT RD

Fair

Over: MALINE CR

S 8 T 46 N R 7 E, St. Louis, MO

Built 1974 Load: 59.4 t ADT: 16,241

CASTLEWOOD RD

Fair

Over: KIEFER CR

S 15 T 44 N R 4 E, St. Louis, MO

Built 1962 Load: 59.4 t ADT: 242

MO 21 S

Fair

Over: BUTLER LK

S 13 T 43 N R 5 E, St. Louis, MO

Built 2002 Load: 60.3 t ADT: 18,038

CHAMBERS RD

Fair

Over: BNSF RR

S 3 T 46 N R 7 E, St. Louis, MO

Built 1936 Load: 61.2 t ADT: 8,937

FLORISSANT RD

Fair

Over: MALINE CR

S 2504 T 46 N R 6 W, St. Louis, MO

Built 1997 Load: 61.2 t ADT: 26,955

BOWLES AVE

Fair

Over: YARNELL CR

S 20 T 44 N R 5 E, St. Louis, MO

Built 1980 Load: 62.1 t ADT: 22,842

FOREST KNOLL DR

Fair

Over: FENTON CR

S 34 T 44 N R 5 E, St. Louis, MO

Built 2003 Load: 62.1 t ADT: 6,700

WASHINGTON ST

Fair

Over: FOUNTAIN CR

S 28 T 47 N R 6 E, St. Louis, MO

Built 1930 Load: 63.0 t ADT: 7,386

ASHBY RD

Fair

Over: MIDLAND BLVD

S 30 T 46 N R 6 E, St. Louis, MO

Built 1993 Load: 63.0 t ADT: 14,413

CONWAY RD

Fair

Over: CREVE COEUR CR

S 11 T 45 N R 4 E, St. Louis, MO

Built 2004 Load: 63.0 t ADT: 6,780

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

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial