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 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.

Related

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