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)

RICHLAND MEADWS DR

Fair

Over: KIEFER CR

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

Built 1993 Load: 27.9 t ADT: 500

PREMIUM WAY

Fair

Over: DRAINAGE CHANNEL

S 368 T 45 N R 3 E, St. Louis, MO

Built 2013 Load: 27.9 t ADT: 345

IS 55 S

Fair

Over: MERAMEC RVR

S 403 T 43 N R 6 E, St. Louis, MO

Built 1964 Load: 27.9 t ADT: 61,319

IS 70 E

Fair

Over: DRAIN DTCH

S 14 T 46 N R 6 E, St. Louis, MO

Built 2001 Load: 28.8 t ADT: 135,978

TESSON CR ESTA. DR

Fair

Over: BR OF GRAVOIS CR

S 22 T 44 N R 6 E, St. Louis, MO

Built 1991 Load: 28.8 t ADT: 572

OLD SMIZER MILL RD

Fair

Over: FENTON CR

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

Built 1997 Load: 28.8 t ADT: 1,116

IS 44 E

Fair

Over: RANKEN BR

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

Built 1930 Load: 28.8 t ADT: 80,548

MO 340 E

Fair

Over: RVR DES PERES

S 4 T 45 N R 6 E, St. Louis, MO

Built 1962 Load: 28.8 t ADT: 12,270

RT AC S

Fair

Over: MALINE CR

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

Built 1968 Load: 28.8 t ADT: 17,221

BAXTER RD

Fair

Over: BONHOMME CR

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

Built 1984 Load: 29.7 t ADT: 16,220

IS 55 S

Fair

Over: GRAVOIS CR

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

Built 1962 Load: 29.7 t ADT: 53,205

BAUMGARTNER RD

Fair

Over: BNSF RR

S 15 T 43 N R 6 E, St. Louis, MO

Built 1981 Load: 30.6 t ADT: 12,499

LIGGETT LN

Fair

Over: BR OF GRAVOIS CR

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

Built 1960 Load: 30.6 t ADT: 1,239

MO 30 W

Fair

Over: MERAMEC RVR, CST WILLIAM

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

Built 1968 Load: 30.6 t ADT: 20,910

IS 64 E

Fair

Over: UP RR, BONHOMME CR

S 2031 T 45 N R 4 E, St. Louis, MO

Built 1987 Load: 30.6 t ADT: 53,025

MO 180 E

Fair

Over: METROLINK

S 2775 T 46 N R 6 E, St. Louis, MO

Built 2000 Load: 31.5 t ADT: 8,975

MO 340 E

Fair

Over: CREVE COEUR CR

S 32 T 46 N R 5 E, St. Louis, MO

Built 1968 Load: 31.5 t ADT: 30,332

IS 64 W

Fair

Over: UP RR, BONHOMME CR

S 2031 T 45 N R 4 E, St. Louis, MO

Built 1968 Load: 31.5 t ADT: 50,214

VERNON AVE

Fair

Over: RVR DES PERES

S 2 T 45 N R 6 E, St. Louis, MO

Built 1981 Load: 31.5 t ADT: 4,674

HANLEY RD

Fair

Over: HAMPTON BR

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

Built 1967 Load: 31.5 t ADT: 28,489

IS 170 W

Fair

Over: NS RR, COLDWATER CR

S 2979 T 46 N R 6 E, St. Louis, MO

Built 1980 Load: 31.5 t ADT: 47,328

SMIZER MILL RD

Fair

Over: N TRIB OF WILLIAMS

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

Built 2005 Load: 31.5 t ADT: 3,129

IS 55 N

Fair

Over: GRAVOIS CR

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

Built 1962 Load: 31.5 t ADT: 52,694

RT N S

Fair

Over: BALL CR

S 14 T 46 N R 6 E, St. Louis, MO

Built 1949 Load: 31.5 t ADT: 16,587

US 67 S

Fair

Over: COLDWATER CR

S 175 T 47 N R 6 E, St. Louis, MO

Built 1968 Load: 31.5 t ADT: 29,942

MERAMEC STATION RD

Fair

Over: GRAND GLAIZE CR

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

Built 1932 Load: 32.4 t ADT: 6,680

MO 180 E

Fair

Over: ENGELHOLM CR

S 2775 T 46 N R 6 E, St. Louis, MO

Built 2000 Load: 32.4 t ADT: 8,975

MARVIN AVE

Fair

Over: COLDWATER CR

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

Built 1991 Load: 32.4 t ADT: 300

OLIVE BLVD

Fair

Over: HANLEY HILLS CR

S 2 T 45 N R 6 E, St. Louis, MO

Built 1915 Load: 32.4 t ADT: 11,723

LADUE RD

Fair

Over: DEER CR

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

Built 1989 Load: 32.4 t ADT: 11,750

COUNTRY CLUB DR

Fair

Over: BR OF TWO MILE CR

S 23 T 45 N R 5 E, St. Louis, MO

Built 1970 Load: 32.4 t ADT: 1,000

OLD DOUGHERTY F RD

Fair

Over: SUGAR CR

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

Built 1993 Load: 32.4 t ADT: 750

DES PERES RD

Fair

Over: TRIB GRAND GLAIZE

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

Built 1995 Load: 32.4 t ADT: 10,000

FAIRVIEW DR

Fair

Over: FISHPOT CR

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

Built 1995 Load: 32.4 t ADT: 80

S CENTRAL AVE

Fair

Over: FLAT CR

S 2071 T 43 N R 3 E, St. Louis, MO

Built 1979 Load: 32.4 t ADT: 5,000

GILSINN LN

Fair

Over: BR OF MERAMEC RVR

S 21 T 44 N R 6 E, St. Louis, MO

Built 1975 Load: 32.4 t ADT: 2,000

PALM DR

Fair

Over: LAWNVIEW CR

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

Built 1995 Load: 32.4 t ADT: 1,000

DERHAKE RD

Fair

Over: NEW FOUNTAIN CR

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

Built 1995 Load: 32.4 t ADT: 3,000

LAFAYETTE ST

Fair

Over: FOUNTAIN CR

S 1202 T 46 N R 6 E, St. Louis, MO

Built 1995 Load: 32.4 t ADT: 2,000

ST ANTHONY LN

Fair

Over: ST ANTHONY CR

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

Built 1999 Load: 32.4 t ADT: 5,000

S GLENWOOD ST

Fair

Over: BNSF RR

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

Built 1993 Load: 32.4 t ADT: 1,020

BALLAS RD

Fair

Over: SUGAR CR

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

Built 1995 Load: 32.4 t ADT: 2,900

FOREST AVE

Fair

Over: BNSF RR

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

Built 1994 Load: 32.4 t ADT: 1,450

HARRISON AVE

Fair

Over: UP RR

S 1 T 44 N R 5 E, St. Louis, MO

Built 1986 Load: 32.4 t ADT: 3,450

CLAY AVE

Fair

Over: UP RR

S 1 T 44 N R 5 E, St. Louis, MO

Built 1999 Load: 32.4 t ADT: 5,950

LINDY DR

Fair

Over: FISHPOT CR

S 1 T 44 N R 4 E, St. Louis, MO

Built 1987 Load: 32.4 t ADT: 1,300

70TH ST

Fair

Over: BR OF RIVER DES PE

S 2775 T 46 N R 6 E, St. Louis, MO

Built 1998 Load: 32.4 t ADT: 500

KINGSLAND AVE

Fair

Over: BR OF RIVER DES PE

S 2775 T 46 N R 6 E, St. Louis, MO

Built 1994 Load: 32.4 t ADT: 1,200

W WATSON RD

Fair

Over: GRAVOIS CREEK BR

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

Built 1994 Load: 32.4 t ADT: 2,529

HAFNER PLACE

Fair

Over: NW BR RVR DES PERE

S 4 T 45 N R 6 E, St. Louis, MO

Built 1995 Load: 32.4 t ADT: 400

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