State profile · Near national median SD

Missouri bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Missouri — drawn straight from the FHWA National Bridge Inventory.

24,654
Public bridges
34.5%
Good condition
8.5%
Poor condition
8.5%
Structurally deficient

Total Bridges

24,654

Public highway bridges in Missouri

Good Condition

34.5%

8,506 bridges rated 7-9

-15.5pp vs 50% benchmark

Poor Condition

8.5%

2,104 bridges rated 0-4

Structurally Deficient

8.5%

2,104 bridges flagged for repair priority

1.5pp vs national avg 7.0%

Missouri vs national bridge condition

Missouri — Good condition share 34.5%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Missouri — Structurally deficient share 28.4%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — Missouri (FHWA NBI)

Missouri34.50150077066601%48.14228928368622%8.53411211162489%8.53411211162489%GoodFairPoorStructurally Deficient
Bridge inventory deck-condition mix — Missouri (FHWA NBI)

Missouri vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Missouri on the same metric.

17

Illinois

7.88% top marginal rate
Structure
Progressive
Burden @ $100K
$27,743

25

Massachusetts

7.96% top marginal rate
Structure
Progressive
Burden @ $100K
$5,314
Selected

29

Missouri

8.53% top marginal rate
Structure
Progressive
Burden @ $100K
$24,654

26

Michigan

8.92% top marginal rate
Structure
Progressive
Burden @ $100K
$1,188

02

Alaska

10.12% top marginal rate
Structure
Progressive
Burden @ $100K
$909

Bridges Needing Most Attention in Missouri

Six lowest-condition bridges in Missouri, ranked by composite NBI rating. Each is inspected at least every 24 months.

All Bridges in Missouri

BEETLE ST

Structurally Deficient

Over: LIT WELDON RVR

S 16 T 66 N R 24 W, Mercer, MO

Built 1910 ADT: 15

FORBES ST

Structurally Deficient

Over: BR OF MEDICINE CR

S 30 T 65 N R 22 W, Mercer, MO

Built 1904 ADT: 30

ICEBERG RD

Structurally Deficient

Over: MARTIN CR

S 22 T 64 N R 25 W, Mercer, MO

Built 1920 ADT: 15

SWINGING BR RD

Structurally Deficient

Over: GRAND AUGLAIZE

S 36 T 39 N R 15 W, Miller, MO

Built 1920 ADT: 250

COUNTY RD 325

Structurally Deficient

Over: DRAIN DTCH

S 26 T 26 N R 16 E, Mississippi, MO

Built 1966 ADT: 35

COUNTY RD 319

Structurally Deficient

Over: DRAIN DTCH NO 29

S 15 T 25 N R 17 E, Mississippi, MO

Built 1965 ADT: 10

COUNTY RD 857

Structurally Deficient

Over: ELK FK SALT RVR

S 29 T 54 N R 10 W, Monroe, MO

Built 1910 ADT: 25

COUNTY RD 215

Structurally Deficient

Over: MID FK OF SALT RVR

S 35 T 55 N R 11 W, Monroe, MO

Built 1910 ADT: 25

FLORENCE TRAIL RD

Structurally Deficient

Over: GABRIEL CR

S 12 T 44 N R 19 W, Morgan, MO

Built 1978 ADT: 25

SMITH CREEK RD

Structurally Deficient

Over: TRIB SMITH FK CR

S 14 T 43 N R 17 W, Morgan, MO

Built 1930 ADT: 15

KATY RD

Structurally Deficient

Over: SLAUGHTER BR

S 23 T 66 N R 35 W, Nodaway, MO

Built 1973 ADT: 50

205TH ST

Structurally Deficient

Over: DRAIN DTCH

S 19 T 65 N R 37 W, Nodaway, MO

Built 1950 ADT: 5

COUNTY RD 611

Structurally Deficient

Over: MARIES RVR

S 26 T 43 N R 10 W, Osage, MO

Built 1893 ADT: 50

COUNTY RD 244

Structurally Deficient

Over: DRAIN DTCH

S 1 T 19 N R 11 E, Pemiscot, MO

Built 1991 ADT: 60

COUNTY RD 472

Structurally Deficient

Over: DRAIN DTCH

S 27 T 17 N R 11 E, Pemiscot, MO

Built 1990 ADT: 30

COUNTY RD 921

Structurally Deficient

Over: TRIB OF BLUE SPRIN

S 447 T 36 N R 10 E, Perry, MO

Built 1920 ADT: 35

E PRARIE GROVE RD

Structurally Deficient

Over: S FORK

S 5 T 46 N R 23 W, Pettis, MO

Built 1930 ADT: 30

RICHEY RD

Structurally Deficient

Over: LIT MUDDY CR

S 16 T 46 N R 22 W, Pettis, MO

Built 1976 ADT: 6

BOONVILLE RD

Structurally Deficient

Over: SHAVER CR

S 35 T 46 N R 20 W, Pettis, MO

Built 1910 ADT: 35

WASHINGTON ST

Structurally Deficient

Over: UP RR

S 5 T 45 N R 21 W, Pettis, MO

Built 1920 ADT: 500

MAIN ST

Structurally Deficient

Over: MUDDY CR

S 3 T 45 N R 23 W, Pettis, MO

Built 1915 ADT: 20

OLD N HWY

Structurally Deficient

Over: BRUSH CR

S 18 T 51 N R 34 W, Platte, MO

Built 1949 ADT: 5

COUNTY RD E-310

Structurally Deficient

Over: BRUSH CR

S 6 T 35 N R 24 W, Polk, MO

Built 1908 ADT: 35

COUNTY RD S-47

Structurally Deficient

Over: FLINT CR

S 6 T 34 N R 23 W, Polk, MO

Built 1900 ADT: 30

COUNTY RD E-552

Structurally Deficient

Over: LIT POMME DE TERRE

S 3 T 31 N R 21 W, Polk, MO

Built 1900 ADT: 40

ROUTE UA

Structurally Deficient

Over: TRIB TO ROUBIDOUX CRK

ENTRANCE TO RG-50, Pulaski, MO

Built 1960 ADT: 5

175TH RD

Structurally Deficient

Over: BRANCH

S 11 T 66 N R 21 W, Putnam, MO

Built 1920 ADT: 5

160TH ST

Structurally Deficient

Over: ELM CR

S 27 T 66 N R 21 W, Putnam, MO

Built 1920 ADT: 5

204TH RD

Structurally Deficient

Over: BRANCH

S 20 T 66 N R 20 W, Putnam, MO

Built 1920 ADT: 10

RAUM RD

Structurally Deficient

Over: UP RR

S 31 T 54 N R 29 W, Ray, MO

Built 1940 ADT: 380

MARY LOIS RD

Structurally Deficient

Over: BR OF MUD CR

S 14 T 54 N R 27 W, Ray, MO

Built 1940 ADT: 25

LANDING RD

Structurally Deficient

Over: CROOKED RVR

S 24 T 57 N R 27 W, Ray, MO

Built 1900 ADT: 25

LEXINGTON RD

Structurally Deficient

Over: NS RR, NS RR, FIRST ST,,

S 16 T 51 N R 27 W, Ray, MO

Built 1946 ADT: 4,852

PAWPAW TRL

Structurally Deficient

Over: BEAR CR

S 21 T 52 N R 19 W, Saline, MO

Built 1920 ADT: 35

MOUNT OLIVE RD

Structurally Deficient

Over: SALT FK

S 3 T 49 N R 20 W, Saline, MO

Built 1915 ADT: 25

COUNTY RD 468

Structurally Deficient

Over: DTCH NO 1

S 33 T 27 N R 13 E, Scott, MO

Built 1962 ADT: 25

COMPRESS RD

Structurally Deficient

Over: DTCH NO 4

S 26 T 26 N R 13 E, Scott, MO

Built 1978 ADT: 300

COUNTY RD 149

Structurally Deficient

Over: MESSNER BR OF SALT

S 25 T 59 N R 11 W, Shelby, MO

Built 1910 ADT: 15

COUNTY RD 371

Structurally Deficient

Over: CREEK

S 8 T 57 N R 9 W, Shelby, MO

Built 1910 ADT: 25

COUNTY RD NE 1270

Structurally Deficient

Over: TRIB TO COOPER CR

S 6 T 39 N R 25 W, St. Clair, MO

Built 1930 ADT: 25

COUNTY RD SW 76

Structurally Deficient

Over: BAKER BR

S 35 T 38 N R 28 W, St. Clair, MO

Built 1930 ADT: 20

COUNTY RD NE 201

Structurally Deficient

Over: GALLINIPPER CR

S 35 T 39 N R 26 W, St. Clair, MO

Built 1900 ADT: 25

ISOLDA AVE

Structurally Deficient

Over: COLDWATER CR

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

Built 1973 ADT: 1,000

AUBUCHON RD

Structurally Deficient

Over: BR OF COWMIRE CR

S 23 T 47 N R 5 E, St. Louis, MO

Built 1999 ADT: 12,454

COLUMBIA AVE

Structurally Deficient

Over: UP RR

S 2037 T 45 N R 6 E, St. Louis city, MO

Built 1913 ADT: 4,060

IS 55 N

Structurally Deficient

Over: MO PAC RR

S 17 T 44 N R 7 E, St. Louis city, MO

Built 1963 ADT: 44,181

2ND ST. ST MARYS

Structurally Deficient

Over: LAUREN CR

S 1862 T 37 N R 10 E, Ste. Genevieve, MO

Built 1920 ADT: 10

COUNTY RD 752

Structurally Deficient

Over: DRAIN DTCH

S 7 T 24 N R 12 E, Stoddard, MO

Built 1959 ADT: 15

POND RD

Structurally Deficient

Over: LIT YELLOW CR

S 7 T 62 N R 18 W, Sullivan, MO

Built 1930 ADT: 5

S STATE ST

Structurally Deficient

Over: UNNAMED CR

S 10 T 62 N R 20 W, Sullivan, MO

Built 2002 ADT: 100

Showing 24,101-24,150 of 24,654 bridges

Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.