Total Bridges
27,743
Public highway bridges in Illinois
State profile · Near national median SD
Illinois bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.
- 27,743
- Public bridges
- 41.2%
- Good condition
- 7.9%
- Poor condition
- 7.9%
- Structurally deficient
Good Condition
41.2%
11,426 bridges rated 7-9
-8.8pp vs 50% benchmark
Poor Condition
7.9%
2,186 bridges rated 0-4
Structurally Deficient
7.9%
2,186 bridges flagged for repair priority
0.9pp vs national avg 7.0%
Illinois vs national bridge condition
Illinois — Good condition share 41.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Illinois — Structurally deficient share 26.3%
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 — Illinois (FHWA NBI)
Counties (102)
Adams 325 Alexander 96 Bond 165 Boone 111 Brown 71 Bureau 382 Calhoun 81 Carroll 185 Cass 77 Champaign 743 Christian 323 Clark 232 Clay 171 Clinton 187 Coles 308 Cook 2185 Crawford 196 Cumberland 169 De Witt 197 DeKalb 264 Douglas 234 DuPage 380 Edgar 278 Edwards 79 Effingham 260 Fayette 356 Ford 300 Franklin 323 Fulton 210 Gallatin 82 Greene 166 Grundy 269 Hamilton 164 Hancock 291 Hardin 58 Henderson 144 Henry 331 Iroquois 565 Jackson 235 Jasper 180 Jefferson 270 Jersey 111 Jo Daviess 198 Johnson 120 Kane 354 Kankakee 352 Kendall 133 Knox 321 LaSalle 529 Lake 286 Lawrence 183 Lee 372 Livingston 578 Logan 296 Macon 368 Macoupin 248 Madison 543 Marion 301 Marshall 153 Mason 85 Massac 138 McDonough 210 McHenry 229 McLean 624 Menard 90 Mercer 162 Monroe 130 Montgomery 261 Morgan 241 Moultrie 171 Ogle 377 Peoria 365 Perry 139 Piatt 249 Pike 338 Pope 86 Pulaski 106 Putnam 50 Randolph 155 Richland 147 Rock Island 256 Saline 176 Sangamon 480 Schuyler 121 Scott 96 Shelby 330 St. Clair 502 Stark 89 Stephenson 332 Tazewell 361 Union 192 Vermilion 515 Wabash 88 Warren 202 Washington 232 Wayne 264 White 210 Whiteside 280 Will 674 Williamson 204 Winnebago 475 Woodford 222
Illinois 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 Illinois on the same metric.
44
Rhode Island
7.69% top marginal rate
31
Nebraska
7.73% top marginal rate
17
Illinois
7.88% top marginal rate
25
Massachusetts
7.96% top marginal rate
29
Missouri
8.53% top marginal rate
Bridges Needing Most Attention in Illinois
Six lowest-condition bridges in Illinois, ranked by composite NBI rating. Each is inspected at least every 24 months.
FAS 1599
PoorOver: DRAINAGE CANAL
2.2 MI E MEYER, Adams, IL
Built 1980 Load: 0.6 t ADT: 200
CH 15
PoorOver: E FK MAZONRIVER
0.05 MI W CH 16, Grundy, IL
Built 1977 Load: 1.0 t ADT: 1,400
MOOSE RD - TR 240
Structurally DeficientOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
Structurally DeficientOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
Structurally DeficientOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
Structurally DeficientOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
FAI 70 WB
FairOver: HIGHLAND SILVER LAKE
2.8 M E ILL 143, Madison, IL
Built 1962 Load: 39.5 t ADT: 11,800
FAS 2735
FairOver: W FK CAHOKIA CK
3MI E PRRTWN, Madison, IL
Built 1953 Load: 39.5 t ADT: 1,600
FAS 775/POCAHONTAS
FairOver: SAND CK
2.9MI E MARINE, Madison, IL
Built 1959 Load: 39.5 t ADT: 700
MAYER ROAD/ TR 239
FairOver: TRIB TO SUGAR CREEK
2.0 MI EAST MARINE, Madison, IL
Built 1976 Load: 39.5 t ADT: 125
I-39/US 51(SB)
FairOver: N FK SANDY CREEK
1.5 MI S OF ILL 18, Marshall, IL
Built 1990 Load: 39.5 t ADT: 8,250
I-39/US 51(NB)
FairOver: N FK SANDY CREEK
1.99 MI S OF ILL 18, Marshall, IL
Built 1990 Load: 39.5 t ADT: 8,250
TR 140C (TH-S55)
FairOver: CREEK
T29N-R1E-3PM SEC 9, Marshall, IL
Built 1920 Load: 39.5 t ADT: 200
SB US 67
FairOver: E FORK LAMOINE RIVER
1 MI N OF MACOMB, McDonough, IL
Built 1988 Load: 39.5 t ADT: 6,050
NB US 67
FairOver: E FORK LAMOINE RIVER
1 MI N OF MACOMB, McDonough, IL
Built 1988 Load: 39.5 t ADT: 6,050
TR 320
FairOver: CARTER CREEK
N.CTR-28-T4NR2W, McDonough, IL
Built 1900 Load: 39.5 t ADT: 75
I-55 SB
FairOver: TIMBER CR
1 MI N OF FUNKSGROVE, McLean, IL
Built 1975 Load: 39.5 t ADT: 11,050
I-55 NB
FairOver: TIMBER CR
1 MI N OF FUNKSGROVE, McLean, IL
Built 1975 Load: 39.5 t ADT: 11,050
US 51
FairOver: TRIB OF TIMBER CREEK
1.45 MI S OF FAI-74, McLean, IL
Built 1985 Load: 39.5 t ADT: 11,900
TR 72
FairOver: ANDY'S RUN
ROAD DIST 6, Monroe, IL
Built 1950 Load: 39.5 t ADT: 400
PANAMA DONNELLSON
FairOver: BEARCAT CREEK
0.1MI E OF PANAMA, Montgomery, IL
Built 1960 Load: 39.5 t ADT: 450
TR 0054
FairOver: BR HORSE CREEK
0.5 MI SW THOMASVILL, Montgomery, IL
Built 1968 Load: 39.5 t ADT: 75
ILL 251
FairOver: SOO RR.
0.1 MI S JCT ILL72, Ogle, IL
Built 1937 Load: 39.5 t ADT: 3,400
IL 72
FairOver: DM&E RR
1 MI W DAVIS JUNCT., Ogle, IL
Built 1983 Load: 39.5 t ADT: 3,850
ILL 64
FairOver: PINE CREEK
4.1 mi E JCT ILL 26, Ogle, IL
Built 1991 Load: 39.5 t ADT: 1,500
ILL 17
FairOver: SENACHWINE CR TRIB.
4 MI W OF SPARLAND, Peoria, IL
Built 1994 Load: 39.5 t ADT: 500
EB I-474
FairOver: KICKAPOO CR,TZPR RR, TP&
.25 MI S OF US 24, Peoria, IL
Built 1978 Load: 39.5 t ADT: 12,800
ILL 78
FairOver: SPOON RIVER TRIB
3.5 MI N OF LAURA, Peoria, IL
Built 1981 Load: 39.5 t ADT: 2,450
BRIMFIELD-JUBILEE
FairOver: HICKORY RUN
NECORNW1/4 24T10NR6E, Peoria, IL
Built 1985 Load: 39.5 t ADT: 75
IL 105(FAP 741)
FairOver: CREEK
4 MI E CERRO GORDO, Piatt, IL
Built 1986 Load: 39.5 t ADT: 900
I-72 EB
FairOver: NAPOLEON HOLLOW DRAW
5.7M E IL 107 INTCHG, Pike, IL
Built 1989 Load: 39.5 t ADT: 4,950
US 54 / IL 107
FairOver: PANTHER CREEK
1.4M N IL 106-PTSFLD, Pike, IL
Built 1989 Load: 39.5 t ADT: 5,300
FAS 604
FairOver: BAY CREEK
3.5 MI N NEBO, Pike, IL
Built 1996 Load: 39.5 t ADT: 675
TR 161
FairOver: COONEY CREEK
2.5 MI W BAY CITY, Pope, IL
Built 1964 Load: 39.5 t ADT: 10
TR 27
FairOver: MILL CREEK
2 MI NW PULASKI, Pulaski, IL
Built 1985 Load: 39.5 t ADT: 150
FRONT ST-CS 6050
FairOver: TRIB TO HESS BAYOU
N EDGE OF MOUNDS, Pulaski, IL
Built 1996 Load: 39.5 t ADT: 50
TR 20
FairOver: SENACHWINE LAKE TRIB
425N, 395E, Putnam, IL
Built 1955 Load: 39.5 t ADT: 50
IL 155
FairOver: ONE MILE RACE CREEK
2.5M W PR DU ROCHER, Randolph, IL
Built 1999 Load: 39.5 t ADT: 100
VETERANS / IL 4 (S
FairOver: LICK CREEK
.3M S WOODSIDE RD, Sangamon, IL
Built 1975 Load: 39.5 t ADT: 22,300
VETERANS / IL 4 (N
FairOver: LICK CREEK
.3M S WOODSIDE RD, Sangamon, IL
Built 1975 Load: 39.5 t ADT: 22,300
IL 4 (FAP 662)
FairOver: SUGAR CREEK
THAYER,3.3M S IL 104, Sangamon, IL
Built 2002 Load: 39.5 t ADT: 6,000
IL 99
FairOver: MISSOURI CR OVERFLOW
.41M N BROWN COUNTY, Schuyler, IL
Built 1986 Load: 39.5 t ADT: 500
IL 99
FairOver: MISSOURI CR OVERFLOW
.47M N BROWN COUNTY, Schuyler, IL
Built 1986 Load: 39.5 t ADT: 500
SUMMERFIELD CH 50
FairOver: RHEINHARDT SLOUGH
1.3MI N ILL RTE 177, St. Clair, IL
Built 1943 Load: 39.5 t ADT: 250
EB I-74
FairOver: MUD CREEK
1.5 MI W DEER CREEK, Tazewell, IL
Built 1960 Load: 39.5 t ADT: 13,100
WB I-74
FairOver: MUD CREEK
1.5 MI W DEER CREEK, Tazewell, IL
Built 1960 Load: 39.5 t ADT: 13,100
IL 122
FairOver: CRANE CREEK TRIB
2 MI W OF DELAVAN, Tazewell, IL
Built 1991 Load: 39.5 t ADT: 700
ILL 135
FairOver: CEDAR CREEK
N EDGE LITTLE YORK, Warren, IL
Built 1987 Load: 39.5 t ADT: 1,200
FAI-64 WB
FairOver: POND CREEK
6.1 MI E US-45 INT, Wayne, IL
Built 1974 Load: 39.5 t ADT: 6,000
TR-416
FairOver: MARTIN CREEK
1 MI E GEFF, Wayne, IL
Built 1965 Load: 39.5 t ADT: 50
IL 53
FairOver: FORKED CREEK
0.6 M E OF IL 102, Will, IL
Built 1922 Load: 39.5 t ADT: 7,950
KENNEDY RD
FairOver: S.BR FORKED CR
1.3 M W OFUS45& 52, Will, IL
Built 1900 Load: 39.5 t ADT: 175
US 20 W B
FairOver: IL RR
.5 MI W OF ILL 251, Winnebago, IL
Built 1960 Load: 39.5 t ADT: 32,000
HARRISON ROAD
FairOver: TUNNISON CREEK
1.9 MI N TRASK BR RD, Winnebago, IL
Built 1992 Load: 39.5 t ADT: 225
MULFORD ROAD
FairOver: KEITH CREEK
0.5 MI N GUILFORD RD, Winnebago, IL
Built 1961 Load: 39.5 t ADT: 8,700
ALPINE ROAD
FairOver: WILLOW CREEK
0.8 MI. S IL 173, Winnebago, IL
Built 1989 Load: 39.5 t ADT: 16,100
Showing 11,951-12,000 of 27,743 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.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.