How many bridges are in Kentucky?

Kentucky has 14,554 public highway bridges tracked in the FHWA National Bridge Inventory. View detailed condition data for each bridge on PlainBridges.

What percentage of bridges in Kentucky are structurally deficient?

7.1% of bridges in Kentucky are classified as structurally deficient by the FHWA, compared to a national average of 7.0%.

State profile · Near national median SD

Kentucky bridge safety

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

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

14,554
Public bridges: 23.9%
Good condition: 7.1%
Poor condition: 7.1%
Structurally deficient

Total Bridges

14,554

Public highway bridges in Kentucky

Good Condition

23.9%

3,472 bridges rated 7-9

-26.1pp vs 50% benchmark

Poor Condition

7.1%

1,027 bridges rated 0-4

Structurally Deficient

7.1%

1,027 bridges flagged for repair priority

0.1pp vs national avg 7.0%

Kentucky vs national bridge condition

Kentucky — Good condition share 23.9%

National avg

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

Kentucky — Structurally deficient share 23.5%

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 — Kentucky (FHWA NBI)

Counties (120)

Adair 143 Allen 88 Anderson 84 Ballard 85 Barren 147 Bath 89 Bell 205 Boone 138 Bourbon 112 Boyd 89 Boyle 89 Bracken 49 Breathitt 124 Breckinridge 91 Bullitt 99 Butler 98 Caldwell 116 Calloway 210 Campbell 131 Carlisle 75 Carroll 68 Carter 189 Casey 143 Christian 300 Clark 117 Clay 160 Clinton 41 Crittenden 89 Cumberland 93 Daviess 283 Edmonson 39 Elliott 53 Estill 56 Fayette 200 Fleming 117 Floyd 161 Franklin 117 Fulton 95 Gallatin 55 Garrard 67 Grant 79 Graves 380 Grayson 119 Green 57 Greenup 160 Hancock 70 Hardin 223 Harlan 252 Harrison 153 Hart 57 Henderson 186 Henry 94 Hickman 123 Hopkins 251 Jackson 51 Jefferson 662 Jessamine 58 Johnson 99 Kenton 142 Knott 134 Knox 127 Larue 54 Laurel 131 Lawrence 103 Lee 42 Leslie 112 Letcher 179 Lewis 149 Lincoln 136 Livingston 104 Logan 135 Lyon 78 Madison 154 Magoffin 107 Marion 149 Marshall 208 Martin 70 Mason 97 McCracken 201 McCreary 39 McLean 75 Meade 24 Menifee 49 Mercer 75 Metcalfe 78 Monroe 70 Montgomery 75 Morgan 114 Muhlenberg 153 Nelson 151 Nicholas 82 Ohio 227 Oldham 66 Owen 54 Owsley 55 Pendleton 94 Perry 176 Pike 331 Powell 110 Pulaski 182 Robertson 24 Rockcastle 87 Rowan 130 Russell 46 Scott 183 Shelby 137 Simpson 50 Spencer 58 Taylor 92 Todd 80 Trigg 109 Trimble 44 Union 127 Warren 106 Washington 104 Wayne 76 Webster 144 Whitley 149 Wolfe 77 Woodford 60

Kentucky 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 Kentucky on the same metric.

Montana

6.70% top marginal rate

Structure: Progressive
Burden @ $100K: $5,122

New York

6.90% top marginal rate

Structure: Progressive
Burden @ $100K: $19,132

Selected

Kentucky

7.06% top marginal rate

Structure: Progressive
Burden @ $100K: $14,554

New Hampshire

7.08% top marginal rate

Structure: Progressive
Burden @ $100K: $2,542

Oklahoma

7.50% top marginal rate

Structure: Progressive
Burden @ $100K: $22,733

Bridges Needing Most Attention in Kentucky

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

WIDS ROAD

Structurally Deficient

Over: WHITE OAK CREEK

100' NE OF JCT CR 5156, Adair, KY

Built 1971 Load: 0.1 t ADT: 10

PETROLEUM RD

Structurally Deficient

Over: LITTLE TRAMMEL CREEK

0.2 MI. E JCT US 31E, Allen, KY

Built 1975 Load: 0.1 t ADT: 164

DEERFIELD ROAD

Structurally Deficient

Over: STOVALL CREEK

.7 MI W OF JCT KY 802, Ballard, KY

Built 1988 Load: 0.1 t ADT: 40

KY-3042

Structurally Deficient

Over: DIX RVR-HERRINGTON LAKE

.05 MI EAST OF KY34, Boyle, KY

Built 1924 Load: 0.1 t ADT: 630

KY-1951

Poor

Over: SNAG CREEK

2.4 MI. S.E KY 1019, Bracken, KY

Built 1988 Load: 0.1 t ADT: 36

Jones Branch

Structurally Deficient

Over: South Fk Quicksand Creek

100' S of KY 1098 MP 9.23, Breathitt, KY

Built 2013 Load: 0.1 t ADT: 55

All Bridges in Kentucky

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

Kentucky vs national bridge condition

Condition Distribution

Counties (120)

Bridges Needing Most Attention in Kentucky

WIDS ROAD

PETROLEUM RD

DEERFIELD ROAD

KY-3042

KY-1951

Jones Branch

All Bridges in Kentucky

I-64 WB RAMP

I-65 SB & RAMPS

I-65 NB & RAMPS

I-65 SB RAMP

I-64 EB RAMP

I-64 EB & RAMP

I-64 WB RAMP

I-64 WB & RAMPS

I-64 WB RAMP

I-71 RAMP TO I-65

I-64 WB ON RAMP

I-64 WB

I-64 WB

I-71

KY 841 WB

KY 841 EB

KY 841 EB OFF RAMP

WOLF PEN BRANCH

US-27

WILMORE ROAD

KY-321

US-23 NC

US-23

US-23 NC

US-23

US-23 NC

US-23

KY-3224

4TH STREET

I-75 NC

I-75

5TH ST/SB I75 RMP

I-75 NC

I-75 NC

I-75

I-75 NC

I-75

KYLES LANE

KY 17

US25/US42/US127

TAYLOR MILL ROAD

TURKEYFOOT ROAD

I-275 WB

I-275 EB

I-75 NC

I-75

I-275 WB

I-275 EB

I-75 N RAMP

I-75 S RAMP

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