How many bridges are in Missouri?

Missouri has 24,654 public highway bridges tracked in the FHWA National Bridge Inventory. View detailed condition data for each bridge on PlainBridges.

What percentage of bridges in Missouri are structurally deficient?

8.5% of bridges in Missouri are classified as structurally deficient by the FHWA, compared to a national average of 7.0%.

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.

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 7, 2026

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)

Counties (115)

Adair 301 Andrew 162 Atchison 191 Audrain 314 Barry 166 Barton 214 Bates 319 Benton 135 Bollinger 125 Boone 334 Buchanan 246 Butler 227 Caldwell 208 Callaway 303 Camden 92 Cape Girardeau 374 Carroll 372 Carter 48 Cass 377 Cedar 112 Chariton 289 Christian 121 Clark 178 Clay 436 Clinton 152 Cole 227 Cooper 193 Crawford 118 Dade 161 Dallas 114 Daviess 222 DeKalb 237 Dent 75 Douglas 75 Dunklin 214 Franklin 333 Gasconade 143 Gentry 246 Greene 493 Grundy 187 Harrison 331 Henry 264 Hickory 57 Holt 167 Howard 133 Howell 189 Iron 129 Jackson 930 Jasper 471 Jefferson 411 Johnson 477 Knox 167 Laclede 119 Lafayette 238 Lawrence 234 Lewis 171 Lincoln 189 Linn 313 Livingston 185 Macon 291 Madison 118 Maries 69 Marion 186 McDonald 148 Mercer 137 Miller 142 Mississippi 99 Moniteau 93 Monroe 178 Montgomery 163 Morgan 105 New Madrid 282 Newton 310 Nodaway 396 Oregon 84 Osage 100 Ozark 82 Pemiscot 206 Perry 120 Pettis 243 Phelps 156 Pike 226 Platte 285 Polk 185 Pulaski 104 Putnam 213 Ralls 138 Randolph 163 Ray 185 Reynolds 91 Ripley 116 Saline 230 Schuyler 120 Scotland 201 Scott 182 Shannon 63 Shelby 109 St. Charles 418 St. Clair 139 St. Francois 165 St. Louis 912 St. Louis city 240 Ste. Genevieve 104 Stoddard 434 Stone 64 Sullivan 224 Taney 151 Texas 162 Vernon 403 Warren 152 Washington 158 Wayne 198 Webster 190 Worth 81 Wright 131

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.

Illinois

7.88% top marginal rate

Structure: Progressive
Burden @ $100K: $27,743

Massachusetts

7.96% top marginal rate

Structure: Progressive
Burden @ $100K: $5,314

Selected

Missouri

8.53% top marginal rate

Structure: Progressive
Burden @ $100K: $24,654

Michigan

8.92% top marginal rate

Structure: Progressive
Burden @ $100K: $1,188

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.

RICHFIELD RD

Structurally Deficient

Over: RUSH CR

S 9 T 51 N R 31 W, Clay, MO

Built 1920 Load: 0.9 t ADT: 900

COUNTY RD E-330

Structurally Deficient

Over: BROF BRUSH CR

S 22 T 35 N R 24 W, Polk, MO

Built 1900 Load: 0.9 t ADT: 45

COUNTY RD S-80

Poor

Over: BEAR CR

S 17 T 33 N R 23 W, Polk, MO

Built 1900 Load: 0.9 t ADT: 30

NOVA AVE

Poor

Over: BUCK CR

S 25 T 52 N R 20 W, Saline, MO

Built 1948 Load: 0.9 t ADT: 35

COUNTY RD 537

Poor

Over: HOLLIDAY CR

S 5 T 28 N R 6 E, Wayne, MO

Built 1950 Load: 0.9 t ADT: 100

ROSEBUD RD

Poor

Over: BR GASCONADE RVR

S 3 T 36 N R 13 W, Pulaski, MO

Built 1940 Load: 1.8 t ADT: 50

All Bridges in Missouri

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Publisher	Kiznis Studio
Sources	FHWA National Bridge Inventory, public U.S. government datasets

Missouri vs national bridge condition

Condition Distribution

Counties (115)

Bridges Needing Most Attention in Missouri

RICHFIELD RD

COUNTY RD E-330

COUNTY RD S-80

NOVA AVE

COUNTY RD 537

ROSEBUD RD

All Bridges in Missouri

MO 366 E

IS 170 W

IS 170 E

MIDLAND BLVD E

IS 170 E

IS 70 E

MO 367 S

IS 44 E

IS 44 W

MO 340 E

MO 340 E

JAMES S MCDONNELL

IS 170 W

RP IS270W TO IS170

RP IS170W TO IS270

RP IS170W TO IS270

IS 270 E

IS 270 W

MO 340 E

ST LOUIS MILLS BLV

US 61 S

WEST PORT PLAZA DR

LACKLAND RD E

CO SOR44E TO FENTO

MO 367 S

MCKELVEY RD S

MO 367 S

MO 367 N

MO 367 S

MO 367 S

IS 270 E

IS 270 W

RP IS270W TO IS70E

IS 270 E

IS 270 W

RP IS70E TO IS270E

IS 70 W

IS 70 E

IS 70 W

IS 70 E

RP IS270E TO IS70W

RP IS270W TO IS70E

RP IS270W TO IS70E

NATURAL BRIDGE RD

MCKELVEY RD S

IS 170 W

IS 170 E

NEW JAMESTOWN RD E

IS 170 E

RP EOR367 TO MO367

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