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)

Sort:

NEWPORT AVE

Over: UP RR

S 1953 T 45 N R 6 E, St. Louis, MO

Built 1989 Load: 32.4 t ADT: 5,000

PAUL AVE

Over: TRIB OF MALINE CR

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

Built 2002 Load: 32.4 t ADT: 3,420

HILLSDALE RD

Over: FISHPOT CR

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

Built 1995 Load: 32.4 t ADT: 350

WARSON RD

Over: TWO MILE CR

S 19 T 45 N R 6 E, St. Louis, MO

Built 2004 Load: 32.4 t ADT: 5,564

OLD HWY 141

Over: BR OF FENTON CR

S 3011 T 44 N R 5 E, St. Louis, MO

Built 2003 Load: 32.4 t ADT: 10,700

LACLEDE STATION RD

Over: HAMPTON CR

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

Built 2010 Load: 32.4 t ADT: 5,000

GREEN PARK RD

Over: GRAVOIS CR

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

Built 2010 Load: 32.4 t ADT: 8,000

BLACKBERRY AVE

Over: BR OF RVR DES PERE

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

Built 1960 Load: 32.4 t ADT: 450

NEW HALLS FERRY RD

Over: COLDWATER CR

S 105 T 47 N R 6 E, St. Louis, MO

Built 1960 Load: 32.4 t ADT: 9,162

W MAIN ST

Over: FLAT CR

S 2010 T 44 N R 3 E, St. Louis, MO

Built 2006 Load: 32.4 t ADT: 5,000

POND RD

Over: TRIB TO BONHOMME C

S 35 T 45 N R 3 E, St. Louis, MO

Built 2001 Load: 32.4 t ADT: 560

SPRING LILLY COURT

Over: WILLIAMS CR

S 31 T 44 N R 5 E, St. Louis, MO

Built 2006 Load: 32.4 t ADT: 254

RAHNING RD

Over: WATERWAY

S 3116 T 44 N R 5 E, St. Louis, MO

Built 1990 Load: 32.4 t ADT: 600

BREDELL AVE

Over: CLAYTONIA CR

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

Built 1990 Load: 32.4 t ADT: 750

TOWN AND COUNTRY P

Over: COLDWATER CRK

S 2 T 66 N R 41 W, St. Louis, MO

Built 1965 Load: 32.4 t ADT: 1,000

MO 180 E

Over: DAWSON CR

S 18 T 46 N R 6 E, St. Louis, MO

Built 1985 Load: 32.4 t ADT: 33,934

MO 109 S

Over: HAMILTON CR

S 13 T 44 N R 3 E, St. Louis, MO

Built 1997 Load: 32.4 t ADT: 14,768

MO 100 E

Over: CAULKS CR

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

Built 1921 Load: 32.4 t ADT: 34,409

IS 44 E

Over: MERAMEC RVR, BACKWOOD DR

S 32 T 44 N R 4 E, St. Louis, MO

Built 1954 Load: 32.4 t ADT: 72,614

GREENWOOD BLVD

Over: BIG BEND BLVD

S 27 T 44 N R 6 E, St. Louis, MO

Built 1960 Load: 33.3 t ADT: 2,291

MO 109 S

Over: MERAMEC RVR

S 12 T 43 N R 3 E, St. Louis, MO

Built 1972 Load: 33.3 t ADT: 13,313

MO 141 S

Over: CREVE COEUR CR

S 923 T 46 N R 5 E, St. Louis, MO

Built 2012 Load: 33.3 t ADT: 33,691

SMILEY RD

Over: TRIB TO FEE FEE CR

S 14 T 46 N R 5 E, St. Louis, MO

Built 1999 Load: 34.2 t ADT: 2,500

WRIGHT AVE

Over: COLDWATER CR

S 18 T 46 N R 6 E, St. Louis, MO

Built 1998 Load: 34.2 t ADT: 4,500

MO 141 S

Over: SMALL LK

S 33 T 47 N R 5 E, St. Louis, MO

Built 1972 Load: 34.2 t ADT: 3,360

MO 109 S

Over: FLAT CR, BIKE PATH

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

Built 1987 Load: 34.2 t ADT: 18,408

MO 231 S

Over: MERAMEC RVR

S 33 T 43 N R 6 E, St. Louis, MO

Built 1995 Load: 34.2 t ADT: 9,048

US 67 S

Over: COLDWATER CR

S 104 T 47 N R 6 E, St. Louis, MO

Built 1969 Load: 34.2 t ADT: 19,500

MCKELVEY RD

Over: BNSF RR, FEE FEE CR

S 17 T 46 N R 5 E, St. Louis, MO

Built 1982 Load: 35.1 t ADT: 8,730

JULIAN AVE

Over: NE BR RVR DES PERE

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

Built 2003 Load: 35.1 t ADT: 150

STRECKER RD

Over: SHOTWELL CR

S 19 T 45 N R 4 E, St. Louis, MO

Built 2003 Load: 35.1 t ADT: 2,000

W WATSON RD

Over: TRIB B

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

Built 2012 Load: 35.1 t ADT: 3,240

SHEPARD RD

Over: TRIB W BR OF CAULK

S 124 T 45 N R 3 E, St. Louis, MO

Built 2004 Load: 35.1 t ADT: 1,683

PENNRIDGE DR

Over: COWMIRE CR

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

Built 1970 Load: 36.0 t ADT: 2,000

PATTERSON RD

Over: DANIEL BOONE CR

S 22 T 47 N R 6 E, St. Louis, MO

Built 1966 Load: 36.0 t ADT: 26,848

BALLAS RD

Over: UP RR

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

Built 1989 Load: 36.0 t ADT: 2,900

SHEPARD RD

Over: CAULKS CR

S 24 T 45 N R 3 E, St. Louis, MO

Built 2004 Load: 36.0 t ADT: 1,683

SCHUETZ RD

Over: E TRIB OF FEE FEE

S 27 T 46 N R 5 E, St. Louis, MO

Built 2005 Load: 36.0 t ADT: 10,354

GROBY RD

Over: RVR DES PERES

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

Built 2005 Load: 36.0 t ADT: 1,316

MO 141 S

Over: MERAMEC RVR

S 18 T 44 N R 5 E, St. Louis, MO

Built 1983 Load: 36.0 t ADT: 59,689

IS 170 E

Over: UP RR

S 2914 T 46 N R 6 E, St. Louis, MO

Built 1968 Load: 36.9 t ADT: 94,602

US 50 E

Over: BNSF RR

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

Built 1977 Load: 36.9 t ADT: 30,976

WALTON RD

Over: TRRA RR

S 33 T 46 N R 6 E, St. Louis, MO

Built 2002 Load: 36.9 t ADT: 3,040

SHAFTESBURY AVE

Over: RVR DES PERES

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

Built 2005 Load: 36.9 t ADT: 2,500

W WATSON RD

Over: TRIB B

S 26 T 44 N R 5 E, St. Louis, MO

Built 2009 Load: 36.9 t ADT: 2,529

MO 141 S

Over: MARYVILLE CR OVRFL

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

Built 2010 Load: 36.9 t ADT: 31,692

MO 100 E

Over: FISHPOT CR

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

Built 1921 Load: 36.9 t ADT: 37,620

IS 270 E

Over: UP RR, FEE FEE CR

S 3069 T 46 N R 5 E, St. Louis, MO

Built 1965 Load: 37.8 t ADT: 138,910

IS 255 N

Over: MISSISSIPPI RVR, UP RR

S 6 T 43 N R 7 E, St. Louis, MO

Built 1985 Load: 37.8 t ADT: 30,251

HANLEY RD

Over: RVR DES PERES

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

Built 1967 Load: 37.8 t ADT: 9,482

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

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026