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)

LEMONA DR

Fair

Over: ST GEORGE CR

S 23 T 44 N R 6 E, St. Louis, MO

Built 1967 Load: 12.6 t ADT: 257

MERAMEC BLVD

Fair

Over: CLIFTY CR

S 36 T 44 N R 3 E, St. Louis, MO

Built 1978 Load: 12.6 t ADT: 800

WW SWIM CLUB

Fair

Over: BR OF DEER CR

S 30 T 45 N R 6 E, St. Louis, MO

Built 1977 Load: 12.6 t ADT: 300

HENCKEN RD

Fair

Over: HOLLOW TRIB

S 20 T 44 N R 3 E, St. Louis, MO

Built 1998 Load: 14.4 t ADT: 120

GREELEY DR

Fair

Over: DANIEL BOONE CR

S 176 T 47 N R 6 E, St. Louis, MO

Built 1950 Load: 15.3 t ADT: 800

SMITH DR

Fair

Over: FISHPOT CR

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

Built 1970 Load: 16.2 t ADT: 300

SHEPLEY DR

Fair

Over: BNSF RR

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

Built 1970 Load: 16.2 t ADT: 1,000

LARKIN-WM INDUS DR

Fair

Over: BR OF YARNELL CR

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

Built 1975 Load: 16.2 t ADT: 500

LARKIN-WILLIAMS

Fair

Over: TRIB MERAMEC RVR

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

Built 1980 Load: 16.2 t ADT: 10,000

MO 231 S

Fair

Over: MARTIGNEY CR

S 3317 T 43 N R 6 E, St. Louis, MO

Built 1900 Load: 16.2 t ADT: 40,970

IS 64 E

Fair

Over: BLACK CR

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

Built 1956 Load: 16.2 t ADT: 123,622

CALVERT AVE

Fair

Over: COLDWATER CR

S 20 T 46 N R 6 E, St. Louis, MO

Built 1984 Load: 17.1 t ADT: 350

DIX AVE

Fair

Over: COLDWATER CR

S 20 T 46 N R 6 E, St. Louis, MO

Built 1984 Load: 17.1 t ADT: 300

EDMUNDSON RD

Fair

Over: COLDWATER CR

S 20 T 46 N R 6 E, St. Louis, MO

Built 1984 Load: 17.1 t ADT: 400

IMPERIAL DR

Fair

Over: DELLWOOD CR

S 6 T 46 N R 7 E, St. Louis, MO

Built 1939 Load: 17.1 t ADT: 1,278

MISSOURI BOTTOM RD

Fair

Over: COWMIRE CR

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

Built 1936 Load: 17.1 t ADT: 1,480

PENNSYLVANIA AVE

Fair

Over: NE BR OF RVR DES P

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

Built 1945 Load: 17.1 t ADT: 4,329

NATURAL BRIDGE RD

Fair

Over: COWMIRE CR

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

Built 1984 Load: 17.1 t ADT: 7,228

OR 44 E

Fair

Over: UP RR

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

Built 1968 Load: 18.0 t ADT: 96

ANTIRE RD

Fair

Over: WILLIAMS CR

S 24 T 44 N R 4 E, St. Louis, MO

Built 1920 Load: 18.0 t ADT: 124

MERAMEC BOTTOM RD

Fair

Over: LEMAY CR

S 17 T 43 N R 6 E, St. Louis, MO

Built 1940 Load: 18.0 t ADT: 4,960

CHAMBERS RD

Fair

Over: DELWOOD CR

S 1 T 46 N R 6 E, St. Louis, MO

Built 1979 Load: 18.0 t ADT: 10,107

WEST HILL PARK DR

Fair

Over: CAULKS CR

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

Built 1990 Load: 18.0 t ADT: 500

WATERFORD DR

Fair

Over: PADDOCK CR

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

Built 1993 Load: 18.0 t ADT: 4,970

BIG BEND BLVD

Fair

Over: BR OF GRAND GLAIZE

S 8 T 44 N R 5 E, St. Louis, MO

Built 1928 Load: 18.9 t ADT: 10,081

SAPPINGTON RD

Fair

Over: KIRKWOOD CR

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

Built 1959 Load: 18.9 t ADT: 14,383

ENCHANTED PKWY

Fair

Over: GRAND GLAIZE CR

S 31 T 45 N R 5 E, St. Louis, MO

Built 1960 Load: 18.9 t ADT: 4,000

DICKSON AVE

Fair

Over: CREEK

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

Built 1950 Load: 19.8 t ADT: 500

PARKWOODS AVE

Fair

Over: CREEK

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

Built 1950 Load: 19.8 t ADT: 200

MASON LN

Fair

Over: GRAND GLAIZE CR

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

Built 1960 Load: 20.7 t ADT: 430

ADAMS AVE

Fair

Over: TRIB OF MALINE CR

S 2689 T 46 N R 6 E, St. Louis, MO

Built 1975 Load: 20.7 t ADT: 4,000

FLORISSANT PARK DR

Fair

Over: DANIEL BOONE CR

S 176 T 47 N R 6 E, St. Louis, MO

Built 1955 Load: 20.7 t ADT: 1,000

LOVELAND DR

Fair

Over: DANIEL BOONE CR

S 176 T 47 N R 6 E, St. Louis, MO

Built 1955 Load: 20.7 t ADT: 800

LACKLAND RD

Fair

Over: VACANT GROUND

S 1920 T 46 N R 6 E, St. Louis, MO

Built 1996 Load: 21.6 t ADT: 2,550

FOREST LEAF DR

Fair

Over: GRAND GLAIZE CR

S 25 T 45 N R 4 E, St. Louis, MO

Built 1976 Load: 22.5 t ADT: 250

HUDSON DR

Fair

Over: BLACK JACK CR

S 5 T 46 N R 7 E, St. Louis, MO

Built 1955 Load: 22.5 t ADT: 3,655

COAL BANK RD

Fair

Over: WATKINS CR

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

Built 1902 Load: 22.5 t ADT: 11

DUNN RD

Fair

Over: BR OF COWMIRE CR

S 36 T 47 N R 6 E, St. Louis, MO

Built 1962 Load: 22.5 t ADT: 1,463

N HANLEY RD

Fair

Over: MALINE CR

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

Built 1974 Load: 22.5 t ADT: 7,675

CREVE COEUR MILL

Fair

Over: BR CREVE COEUR CR

S 31 T 46 N R 5 E, St. Louis, MO

Built 1971 Load: 22.5 t ADT: 2,292

MIDLAND BLVD

Fair

Over: RVR DES PERES

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

Built 1987 Load: 22.5 t ADT: 6,620

WYNCREST DR

Fair

Over: BR GRAND GLAIZE CR

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

Built 1973 Load: 22.5 t ADT: 3,173

CLAYTON RD

Fair

Over: CAULKS CR

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

Built 1979 Load: 22.5 t ADT: 11,751

BRIARSTONE DR

Fair

Over: SAPPINGTON CR

S 20 T 44 N R 6 E, St. Louis, MO

Built 1965 Load: 22.5 t ADT: 913

GREEN PARK RD

Fair

Over: GRAVOIS CR

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

Built 1954 Load: 22.5 t ADT: 4,663

BAYLESS AVE

Fair

Over: GRAVOIS CR

S 13 T 44 N R 6 E, St. Louis, MO

Built 1971 Load: 22.5 t ADT: 13,770

SUNRISE HEIGHTS DR

Fair

Over: MARTIGNEY CR

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

Built 1982 Load: 22.5 t ADT: 1,485

RINGER RD

Fair

Over: MATTESE CR

S 10 T 43 N R 6 E, St. Louis, MO

Built 1966 Load: 22.5 t ADT: 2,978

MATTIS RD

Fair

Over: W TRIB MATTESE CR

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

Built 1987 Load: 22.5 t ADT: 10,357

OLD JAMESTOWN RD

Fair

Over: MILL CR

S 1 T 47 N R 6 E, St. Louis, MO

Built 1971 Load: 22.5 t ADT: 1,878

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