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)

OSSENFORT RD

Good

Over: WILDHORSE CR

S 1956 T 45 N R 3 E, St. Louis, MO

Built 2006 Load: 38.7 t ADT: 790

WARSON RD

Good

Over: DEER CR

S 23 T 45 N R 6 E, St. Louis, MO

Built 2009 Load: 38.7 t ADT: 7,500

RP MO141S TO RTABE

Good

Over: CREVE COUER CR

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

Built 2011 Load: 38.7 t ADT: 542

ALLEY

Good

Over: RVR DES PERES

S 378 T 45 N R 6 E, St. Louis, MO

Built 1989 Load: 38.7 t ADT: 100

STRECKER RD

Good

Over: CAULKS CR

S 30 T 45 N R 4 E, St. Louis, MO

Built 2001 Load: 39.6 t ADT: 1,895

MO 109 S

Good

Over: BONHOMME CR

S 163 T 45 N R 5 E, St. Louis, MO

Built 2009 Load: 39.6 t ADT: 15,945

HANNA RD

Good

Over: FISHPOT CR

S 17 T 44 N R 5 E, St. Louis, MO

Built 2013 Load: 39.6 t ADT: 6,000

GIST RD

Good

Over: COWMIRE CR

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

Built 2015 Load: 39.6 t ADT: 1,174

MASON RD

Good

Over: SMITH CR

S 8 T 45 N R 5 E, St. Louis, MO

Built 2015 Load: 39.6 t ADT: 5,892

GREEN PARK IND DR

Good

Over: GRAVOIS CR

S 2995 T 44 N R 6 E, St. Louis, MO

Built 2001 Load: 40.5 t ADT: 4,000

LADUE RD

Good

Over: CREVE COEUR CR

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

Built 2012 Load: 40.5 t ADT: 3,942

RT AB E

Good

Over: HIBLER CR

S 8 T 45 N R 5 E, St. Louis, MO

Built 2019 Load: 40.5 t ADT: 6,270

OR 270 E

Good

Over: DRAINAGE DTCH

S 33 T 47 N R 6 W, St. Louis, MO

Built 2022 Load: 40.5 t ADT: 7,308

US 67 S

Good

Over: DEER CRK

S 13 T 45 N R 5 E, St. Louis, MO

Built 2023 Load: 40.5 t ADT: 27,908

CLAIRMONT DR

Good

Over: BR OF DELWOOD CR

S 6 T 46 N R 7 E, St. Louis, MO

Built 1947 Load: 41.4 t ADT: 688

EAGLE BLUFF

Good

Over: CAULKS CR

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

Built 2001 Load: 41.4 t ADT: 563

RP RTABE TO MO141N

Good

Over: CREVE COEUR CR

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

Built 2010 Load: 41.4 t ADT: 1,190

SPRING MEADOWS DR

Good

Over: GRAND GLAIZE CR

S 36 T 45 N R 4 E, St. Louis, MO

Built 2018 Load: 41.4 t ADT: 1,150

GLENOWEN DR

Good

Over: MALINE CR

S 393 T 46 N R 7 E, St. Louis, MO

Built 1999 Load: 42.3 t ADT: 1,500

BELLEFONTAINE RD

Good

Over: BNSF RR

S 15 T 47 N R 7 E, St. Louis, MO

Built 2004 Load: 42.3 t ADT: 792

ST MALACHY LN

Good

Over: ST ANTHONY CR

S 5 T 47 N R 6 E, St. Louis, MO

Built 2002 Load: 42.3 t ADT: 700

ST CYR RD

Good

Over: CALUMET CR

S 9 T 46 N R 7 E, St. Louis, MO

Built 2015 Load: 42.3 t ADT: 1,000

OLD BAUMGARTNER RD

Good

Over: MATTESE CR

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

Built 2016 Load: 42.3 t ADT: 995

GERALDINE AVE

Good

Over: COLDWATER CREEK

S 17 T 46 N R 6 E, St. Louis, MO

Built 2022 Load: 42.3 t ADT: 1,500

MO 141 S

Good

Over: SMALL LAKE

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

Built 2022 Load: 42.3 t ADT: 3,360

MO 141 N

Good

Over: SMALL LAKE

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

Built 2022 Load: 42.3 t ADT: 8,592

MERAMEC BOTTOM RD

Good

Over: LEMAY CR

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

Built 2022 Load: 42.3 t ADT: 4,960

AUBUCHON RD

Good

Over: BRANCH OF COWMIRE

S 22 T 47 N R 5 E, St. Louis, MO

Built 2022 Load: 42.3 t ADT: 12,454

LAKEFRONT DR

Good

Over: UNKNOWN LK

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

Built 1989 Load: 43.2 t ADT: 2,912

FOREST PARK PKWY E

Good

Over: FORSYTH BLVD

S 15 T 45 N R 6 E, St. Louis, MO

Built 2004 Load: 43.2 t ADT: 7,898

FOREST PARK PKWY W

Good

Over: FORSYTH BLVD

S 15 T 45 N R 6 E, St. Louis, MO

Built 2004 Load: 43.2 t ADT: 9,195

OLD GRAVOIS RD

Good

Over: MERAMEC RVR

S 35 T 44 N R 5 E, St. Louis, MO

Built 2012 Load: 43.2 t ADT: 10,000

OR 44 E

Good

Over: WILLIAMS CR

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

Built 2012 Load: 43.2 t ADT: 984

CONWAY RD

Good

Over: MARYVILLE CR

S 7 T 45 N R 5 E, St. Louis, MO

Built 2016 Load: 43.2 t ADT: 9,189

FAWN VALLEY DR

Good

Over: TWO MILE CR

S 26 T 45 N R 5 E, St. Louis, MO

Built 2015 Load: 43.2 t ADT: 300

JAMES S MCDONNELL

Good

Over: COLDWATER CRK

S 5 T 46 N R 6 E, St. Louis, MO

Built 2023 Load: 43.2 t ADT: 10,699

MO 115 S

Good

Over: METROLINK WB, METROLINK

S 23 T 46 N R 6 E, St. Louis, MO

Built 2004 Load: 44.1 t ADT: 5,727

IS 270 E

Good

Over: COLDWATER CRK

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

Built 2020 Load: 44.1 t ADT: 51,141

FEE FEE RD

Good

Over: TRIB TO FEE FEE CR

S 23 T 46 N R 5 E, St. Louis, MO

Built 2000 Load: 45.0 t ADT: 8,394

MCKNIGHT RD

Good

Over: TRIB TO BLACK CR

S 17 T 45 N R 6 E, St. Louis, MO

Built 2015 Load: 45.0 t ADT: 15,000

IS 44 E

Good

Over: BNSF RR

S 35 T 45 N R 6 E, St. Louis, MO

Built 2016 Load: 45.0 t ADT: 43,460

MUSICK AVE

Good

Over: SAPPINGTON CR

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

Built 2017 Load: 45.0 t ADT: 5,067

OLD MANCHESTER RD

Good

Over: BR OF FOX CR

S 19 T 44 N R 3 E, St. Louis, MO

Built 2010 Load: 45.9 t ADT: 998

ADIE RD

Good

Over: FEE FEE CR

S 358 T 46 N R 5 E, St. Louis, MO

Built 2016 Load: 45.9 t ADT: 1,430

TESSHIRE DR

Good

Over: GRAVOIS CR

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

Built 2020 Load: 45.9 t ADT: 3,450

PATTERSON RD

Good

Over: LAWNVIEW CR

S 15 T 47 N R 6 E, St. Louis, MO

Built 1995 Load: 46.8 t ADT: 19,778

IS 170 E

Good

Over: RP FROST AVE TO IS170E

S 2 T 46 N R 6 E, St. Louis, MO

Built 1978 Load: 46.8 t ADT: 27,257

BARRETT STATION RD

Good

Over: ROYAL ACRES CR

S 32 T 45 N R 5 E, St. Louis, MO

Built 2010 Load: 46.8 t ADT: 12,800

RT D E

Good

Over: ENGELHOLM CR, METROLINK

S 1 T 45 N R 6 E, St. Louis, MO

Built 1997 Load: 46.8 t ADT: 10,336

US 61 S

Good

Over: MERAMEC RVR

S 16 T 43 N R 6 E, St. Louis, MO

Built 2003 Load: 47.7 t ADT: 16,233

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