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:

RP MISSOURI BOTTOM

Over: MO 370

S 2039 T 46 N R 5 E, St. Louis, MO

Built 1990 ADT: 16,512

MATTIS RD E

Over: IS 55

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

Built 1995 ADT: 153,270

MO 141 N

Over: MO 370

S 2038 T 47 N R 5 E, St. Louis, MO

Built 1991 ADT: 23,308

TAUSSIG AVE E

Over: MO 370

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

Built 1991 ADT: 22,847

IS 270 W

Over: RP IS270E TO MO370W

S 2038 T 47 N R 5 E, St. Louis, MO

Built 1990 ADT: 6,769

MO 100 E

Over: CST DES PERES RD

S 33 T 45 N R 5 E, St. Louis, MO

Built 1995 ADT: 2,888

RP IS270W TO US67

Over: RP IS55N TO IS255S

S 302 T 44 N R 6 E, St. Louis, MO

Built 1995 ADT: 8,015

US 50 E

Over: IS 55

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

Built 1995 ADT: 53,205

RP IS70W TO NATURA

Over: CST CYPRESS RD

S 24 T 46 N R 6 E, St. Louis, MO

Built 1994 ADT: 5,050

IS 55 S

Over: CST GREEN PARK RD

S 26 T 44 N R 6 E, St. Louis, MO

Built 1962 ADT: 4,510

IS 55 N

Over: CST GREEN PARK RD

S 26 T 44 N R 6 E, St. Louis, MO

Built 1962 ADT: 4,510

MERAMEC BOTTOM RD

Over: IS 55

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

Built 1996 ADT: 61,276

OR 44 E

Over: IS 270

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

Built 1996 ADT: 88,692

RP IS44W TO IS270W

Over: RP IS270E TO IS44W

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

Built 1996 ADT: 10,781

SAPPINGTON RD S

Over: IS 270

S 3112 T 55 N R 6 E, St. Louis, MO

Built 1995 ADT: 89,457

BENNINGTON PL N

Over: MO 364

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

Built 1997 ADT: 29,109

MO 141 S

Over: MO 100

S 31 T 45 N R 4 E, St. Louis, MO

Built 1997 ADT: 23,768

RT D E

Over: US 67

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

Built 1961 ADT: 10,946

US 67 S

Over: MO 180

S 406 T 46 N R 5 E, St. Louis, MO

Built 1969 ADT: 16,087

IS 270 E

Over: MO 367

S 33 T 47 N R 7 E, St. Louis, MO

Built 1961 ADT: 8,801

IS 44 E

Over: MO 141

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

Built 1958 ADT: 21,079

MO 21 S

Over: CRD MERAMEC BOTTOM RD

S 13 T 43 N R 4 E, St. Louis, MO

Built 1940 ADT: 4,361

ANTIRE RD S

Over: IS 44

S 34 T 44 N R 4 E, St. Louis, MO

Built 1958 ADT: 36,310

MO 115 N

Over: IS 70

S 9 T 46 N R 6 E, St. Louis, MO

Built 1958 ADT: 59,530

MO 180 E

Over: IS 70

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

Built 1957 ADT: 48,911

MO 180 W

Over: IS 70

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

Built 1957 ADT: 36,917

FEE FEE RD S

Over: IS 70

S 406 T 46 N R 5 E, St. Louis, MO

Built 1957 ADT: 36,917

US 67 S

Over: IS 70

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

Built 1957 ADT: 50,178

US 67 N

Over: IS 70

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

Built 1957 ADT: 39,744

IS 70 W

Over: CST MAIN ST

S 32 T 47 N R 5 E, St. Louis, MO

Built 1958 ADT: 6,104

MO 100 E

Over: IS 270

S 34 T 45 N R 5 E, St. Louis, MO

Built 1962 ADT: 104,774

BIG BEND RD E

Over: IS 270

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

Built 1962 ADT: 111,629

IS 270 E

Over: CRD MARSHALL RD

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

Built 1962 ADT: 4,808

IS 270 W

Over: CRD MARSHALL RD

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

Built 1962 ADT: 4,808

IS 70 E

Over: IS 270

S 15 T 46 N R 5 E, St. Louis, MO

Built 1957 ADT: 80,758

IS 270 E

Over: MO 180

S 131 T 47 N R 5 E, St. Louis, MO

Built 1960 ADT: 27,415

IS 270 E

Over: MO 366

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

Built 1962 ADT: 9,784

IS 270 E

Over: CST ROTT RD

S 23 T 44 N R 5 E, St. Louis, MO

Built 1967 ADT: 4,077

IS 270 W

Over: CST ROTT RD

S 23 T 44 N R 5 E, St. Louis, MO

Built 1967 ADT: 4,077

MO 30 E

Over: IS 270

S 3117 T 44 N R 6 E, St. Louis, MO

Built 1966 ADT: 83,497

MO 21 S

Over: IS 270

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

Built 1967 ADT: 90,084

IS 270 E

Over: CRD VON TALGE RD

S 33 T 44 N R 6 E, St. Louis, MO

Built 1967 ADT: 3,107

IS 270 E

Over: RT AB

S 10 T 45 N R 5 E, St. Louis, MO

Built 1964 ADT: 7,062

IS 270 W

Over: RT AB

S 10 T 45 N R 5 E, St. Louis, MO

Built 1964 ADT: 7,062

IS 270 E

Over: CST CONWAY RD

S 15 T 45 N R 5 E, St. Louis, MO

Built 1964 ADT: 6,789

LACLEDE STATION RD

Over: BLACK CREEK BR

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

Built 1972 Load: 9.9 t ADT: 5,000

W BRUNO AVE

Over: BLACK CREEK BR

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

Built 1976 Load: 9.9 t ADT: 2,500

FRANKLIN RD

Over: CLEAR CR

S 18 T 43 N R 3 E, St. Louis, MO

Built 1923 Load: 11.7 t ADT: 1

OLD SMIZER MILL RD

Over: FENTON CR

S 28 T 44 N R 6 E, St. Louis, MO

Built 1930 Load: 11.7 t ADT: 11

HOLMES AVE

Over: GRAVOIS CR

S 1936 T 44 N R 6 E, St. Louis, MO

Built 1970 Load: 11.7 t ADT: 2,000

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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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.