St. Clair County, MO

139 public highway bridges

St. Clair County Bridge Snapshot

St. Clair County, Missouri contains 139 public highway bridges in the FHWA National Bridge Inventory. Roughly 23% are rated “Good,” 55.4% “Fair,” 19.4% “Poor,” and 19.4% 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.

139

Total Bridges

23%

Good

19.4%

Poor

19.4%

Structurally Deficient

Condition Distribution

Good

23% (32)

Fair

55.4% (77)

Poor

19.4% (27)

SD

19.4% (27)

All Bridges (139)

Sort:

MO 13 S

Over: US 54

S 12 T 36 N R 25 W, St. Clair, MO

Built 2006 ADT: 2,658

MO 13 N

Over: US 54

S 12 T 36 N R 25 W, St. Clair, MO

Built 2006 ADT: 2,490

MO 82 E

Over: MO 13

S 21 T 38 N R 25 W, St. Clair, MO

Built 2013 ADT: 5,862

COUNTY RD NW 1401

Over: TRIB CAMPBELL BR

S 5 T 38 N R 28 W, St. Clair, MO

Built 1930 Load: 0.9 t ADT: 40

COUNTY RD NW 451

Over: MONEGAW CR

S 11 T 38 N R 27 W, St. Clair, MO

Built 1930 Load: 5.4 t ADT: 20

COUNTY RD NW 1000

Over: RICKY CR

S 1 T 39 N R 28 W, St. Clair, MO

Built 1930 Load: 9.0 t ADT: 20

COUNTY RD SE 1425

Over: TRIB OF WEAUBLEAU

S 25 T 37 N R 24 W, St. Clair, MO

Built 1930 Load: 9.9 t ADT: 15

COUNTY RD SE 50

Over: BRUSH CR

S 27 T 38 N R 25 W, St. Clair, MO

Built 1950 Load: 10.8 t ADT: 25

COUNTY RD SW 600

Over: SIMMS CR

S 27 T 37 N R 27 W, St. Clair, MO

Built 1953 Load: 11.7 t ADT: 35

COUNTY RD NW 1270

Over: COOPERS CR

S 5 T 39 N R 26 W, St. Clair, MO

Built 1916 Load: 13.5 t ADT: 40

COUNTY RD NW 1000

Over: TRIB OF COOPERS CR

S 4 T 39 N R 26 W, St. Clair, MO

Built 1940 Load: 13.5 t ADT: 20

COUNTY RD NW 501

Over: BRANCH

S 2 T 39 N R 27 W, St. Clair, MO

Built 1964 Load: 16.2 t ADT: 15

COUNTY RD NE 175

Over: TURKEY CR

S 23 T 38 N R 26 W, St. Clair, MO

Built 1975 Load: 16.2 t ADT: 100

NE OLD 13 HWY

Over: BR OF GALLINIPPER

S 5 T 38 N R 25 W, St. Clair, MO

Built 1940 Load: 16.2 t ADT: 25

COUNTY RD SW 50

Over: YELLOW CR

S 33 T 38 N R 26 W, St. Clair, MO

Built 1977 Load: 16.2 t ADT: 10

FIRST ST

Over: TRIB TO COON CR

S 17 T 37 N R 26 W, St. Clair, MO

Built 1950 Load: 16.2 t ADT: 100

COUNTY RD NW 630

Over: RICKY CR

S 25 T 39 N R 28 W, St. Clair, MO

Built 2002 Load: 16.2 t ADT: 20

RT V S

Over: COON CR

S 18 T 37 N R 25 W, St. Clair, MO

Built 1976 Load: 16.2 t ADT: 187

COUNTY RD NW 1150

Over: BRANCH

S 4 T 39 N R 27 W, St. Clair, MO

Built 1930 Load: 17.1 t ADT: 60

COUNTY RD SE 601

Over: W COON CR

S 27 T 37 N R 25 W, St. Clair, MO

Built 2002 Load: 17.1 t ADT: 20

RT T E

Over: WEAUBLEAU CR

S 7 T 37 N R 24 W, St. Clair, MO

Built 1967 Load: 18.0 t ADT: 387

RT B E

Over: SALT CR

S 16 T 38 N R 26 W, St. Clair, MO

Built 1976 Load: 18.9 t ADT: 448

COUNTY RD SE 801

Over: W COON CR

S 35 T 37 N R 25 W, St. Clair, MO

Built 2003 Load: 19.8 t ADT: 20

RT O E

Over: LIT CLEAR CR

S 24 T 37 N R 28 W, St. Clair, MO

Built 1976 Load: 19.8 t ADT: 183

COUNTY RD SE 451

Over: BRUSH CR

S 20 T 36 N R 25 W, St. Clair, MO

Built 1990 Load: 20.7 t ADT: 40

RT H S

Over: CLEAR CR

S 15 T 37 N R 28 W, St. Clair, MO

Built 1976 Load: 20.7 t ADT: 535

RT B E

Over: LIT MONEGAW CR

S 13 T 38 N R 27 W, St. Clair, MO

Built 1976 Load: 21.6 t ADT: 224

RT BB E

Over: BAKER BR

S 26 T 38 N R 28 W, St. Clair, MO

Built 1957 Load: 21.6 t ADT: 80

RT D S

Over: GALLINIPPER CR

S 27 T 39 N R 26 W, St. Clair, MO

Built 1958 Load: 21.6 t ADT: 185

COUNTY RD SE 450

Over: W COON CR

S 20 T 37 N R 25 W, St. Clair, MO

Built 1985 Load: 22.5 t ADT: 30

COUNTY RD NE 1301

Over: TRIB BRILEY CR

S 4 T 38 N R 24 W, St. Clair, MO

Built 1948 Load: 22.5 t ADT: 50

RT H S

Over: OSAGE RVR

S 15 T 37 N R 28 W, St. Clair, MO

Built 1976 Load: 22.5 t ADT: 460

MO 82 E

Over: BRUSH CR

S 22 T 38 N R 25 W, St. Clair, MO

Built 1980 Load: 22.5 t ADT: 789

RT TT E

Over: WEAUBLEAU CR

S 36 T 38 N R 25 W, St. Clair, MO

Built 1960 Load: 22.5 t ADT: 421

RT P S

Over: BR OF MONEGAW CR

S 17 T 39 N R 28 W, St. Clair, MO

Built 1935 Load: 22.5 t ADT: 570

COUNTY RD NW 776

Over: RICKY CR

S 24 T 39 N R 28 W, St. Clair, MO

Built 1940 Load: 23.4 t ADT: 15

COUNTY RD NW 726

Over: REID CR

S 21 T 39 N R 27 W, St. Clair, MO

Built 1925 Load: 23.4 t ADT: 10

COUNTY RD NW 176

Over: MONEGAW CR

S 21 T 38 N R 27 W, St. Clair, MO

Built 1977 Load: 23.4 t ADT: 40

COUNTY RD SW 366

Over: COON CR

S 18 T 37 N R 26 W, St. Clair, MO

Built 1977 Load: 23.4 t ADT: 100

RT C E

Over: BIG MUDDY CR

S 14 T 39 N R 25 W, St. Clair, MO

Built 1976 Load: 23.4 t ADT: 763

RT M S

Over: REID CR

S 5 T 38 N R 27 W, St. Clair, MO

Built 1951 Load: 23.4 t ADT: 44

COUNTY RD NW 100

Over: WELLS BR

S 20 T 38 N R 28 W, St. Clair, MO

Built 1917 Load: 24.3 t ADT: 30

MO 82 E

Over: BROYLES BR

S 6 T 37 N R 25 W, St. Clair, MO

Built 1978 Load: 25.2 t ADT: 1,071

RT B E

Over: DRY BR

S 7 T 38 N R 28 W, St. Clair, MO

Built 1938 Load: 25.2 t ADT: 309

COUNTY RD NW 400

Over: CAMPBELL BR

S 6 T 38 N R 28 W, St. Clair, MO

Built 2002 Load: 26.1 t ADT: 20

MO 82 E

Over: TRUMAN RESERVOIR

S 19 T 38 N R 24 W, St. Clair, MO

Built 1978 Load: 26.1 t ADT: 789

RT V S

Over: RATTLESNAKE CR

S 1 T 36 N R 26 W, St. Clair, MO

Built 1954 Load: 26.1 t ADT: 187

MO 13 S

Over: OSAGE RVR (TRUMAN

S 16 T 38 N R 25 W, St. Clair, MO

Built 1974 Load: 27.0 t ADT: 11,973

COUNTY RD SW 401

Over: COON CR

S 26 T 37 N R 27 W, St. Clair, MO

Built 2003 Load: 27.0 t ADT: 40

COUNTY RD NW 1101

Over: RICKEY CR

S 10 T 39 N R 28 W, St. Clair, MO

Built 1930 Load: 27.9 t ADT: 10

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026