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
TR 75
FairOver: TRIB CLEAR CREEK
2.5 MI SW MCNABB, Putnam, IL
Built 1999 Load: 32.4 t ADT: 75
TR 36A
FairOver: COFFEE CREEK
NE1/4-11-T32NR2W, Putnam, IL
Built 2011 Load: 32.4 t ADT: 1,500
FAS 1870
FairOver: MARY'S RIVER
1870 OVER MARY'S RV, Randolph, IL
Built 1987 Load: 32.4 t ADT: 725
CH 10
FairOver: HORSE CREEK
3 MI EAST OF RUNA, Randolph, IL
Built 1985 Load: 32.4 t ADT: 300
TR 183
FairOver: ROCKY BRANCH
2.5 M SE OF EVANSVLE, Randolph, IL
Built 1975 Load: 32.4 t ADT: 75
TR 45
FairOver: TRIB TO PLUM CK
2.5 MI E OF BALDWIN, Randolph, IL
Built 1980 Load: 32.4 t ADT: 25
TR 118
FairOver: LITTLE PLUM CREEK
2 MI NE OF WALSH, Randolph, IL
Built 1980 Load: 32.4 t ADT: 25
TR 155
FairOver: BUTTER CREEK
1.5M SE OFEVANSVILLE, Randolph, IL
Built 1984 Load: 32.4 t ADT: 50
TR 124A
FairOver: TRIB TO 9 MILE CK
6 MI. SE EVANSVILLE, Randolph, IL
Built 1993 Load: 32.4 t ADT: 50
TR 176
FairOver: PLUM CREEK
1/2 MI NW SPARTA, Randolph, IL
Built 1991 Load: 32.4 t ADT: 425
TR 105
FairOver: TRIB TO PLUM CK
2 MI WEST SPARTA, Randolph, IL
Built 1996 Load: 32.4 t ADT: 325
TR 118
FairOver: PLUM CREEK
2.5 MI SE OF BALDWIN, Randolph, IL
Built 1979 Load: 32.4 t ADT: 25
TR 148
FairOver: PLUM CREEK
0.50 MS OF HOUSTON, Randolph, IL
Built 1901 Load: 32.4 t ADT: 100
TR 138
FairOver: GRAVEL CREEK
TR 138 OVRGRAVEL CRK, Randolph, IL
Built 1980 Load: 32.4 t ADT: 275
TR 329
FairOver: LITTLE MIL CREEK
6 MI E OF CHESTER, Randolph, IL
Built 1980 Load: 32.4 t ADT: 25
TR 205
FairOver: NINE MILE CREEK
5.5 MI NE ELLIS GROV, Randolph, IL
Built 1982 Load: 32.4 t ADT: 75
TR 196A
FairOver: LITTLE MARY'S RIVER
TR 196A OVER LIT MAR, Randolph, IL
Built 1985 Load: 32.4 t ADT: 50
TR 207
FairOver: WELGE CREEK
1.25MI W OF BLAIR, Randolph, IL
Built 1988 Load: 32.4 t ADT: 75
TR 327
FairOver: MARY'S RIVER
3 MI SE OFCHESTER, Randolph, IL
Built 1987 Load: 32.4 t ADT: 25
RICHELAMAN RD
FairOver: COX CREEK
4MI SE STEELVILLE, Randolph, IL
Built 1995 Load: 32.4 t ADT: 75
TR 311
FairOver: MARY'S RIVER
4.25 M E OF CHESTER, Randolph, IL
Built 1977 Load: 32.4 t ADT: 325
TR 52 SCHERLE LN
FairOver: CAMPS CREEK
2 MI WEST EVANSVILLE, Randolph, IL
Built 1997 Load: 32.4 t ADT: 10
TR-10 (Buzz Rk Rd)
FairOver: Buzzard Rock Creek
1MI N P-DUROCHER, Randolph, IL
Built 2002 Load: 32.4 t ADT: 75
TR 68
FairOver: HORSE CREEK
TR68 OVER HORSE CRK, Randolph, IL
Built 1958 Load: 32.4 t ADT: 50
FAS-1722
FairOver: CREEK
2.5 MI E NOBLE, Richland, IL
Built 1950 Load: 32.4 t ADT: 225
CH-8
FairOver: HOG RUN CREEK
3.5 MI SW NOBLE, Richland, IL
Built 1978 Load: 32.4 t ADT: 100
TR-299
FairOver: SUGAR CREEK
1 MI SW PARKERSBURG, Richland, IL
Built 1981 Load: 32.4 t ADT: 50
TR-54
FairOver: HURRICANE CREEK
2 MI E WAKEFIELD, Richland, IL
Built 1982 Load: 32.4 t ADT: 50
TR-164
FairOver: SUGAR CREEK
0.3 MI N PARKERSBURG, Richland, IL
Built 1984 Load: 32.4 t
FAS-801 (CH-5)
FairOver: TRIB FOX RIVER
1 MI W DUNDAS, Richland, IL
Built 1989 Load: 32.4 t ADT: 725
CH 08
FairOver: LITTLE WABASH RIVER
2.5 MI W SCHNELL, Richland, IL
Built 2000 Load: 32.4 t ADT: 75
FAI 280
FairOver: MISSISSIPPI RIVER
SW OF ROCK ISLAND, Rock Island, IL
Built 1970 Load: 32.4 t ADT: 28,100
ILL 94
FairOver: MILL CREEK
1.0 MI S OF ILL 192, Rock Island, IL
Built 1979 Load: 32.4 t ADT: 1,750
TOWNSHIP ROAD 151
FairOver: COPPERAS CREEK
2.5 M N BUFFALO PRAI, Rock Island, IL
Built 1979 Load: 32.4 t ADT: 25
34TH AVE
FairOver: STREAM & PARKING RMP
BLACKHAWK CAMPUS, Rock Island, IL
Built 1967 Load: 32.4 t ADT: 3,250
52ND AVE
FairOver: DRAINAGE DITCH
SW MOLINE, Rock Island, IL
Built 1975 Load: 32.4 t ADT: 3,350
44TH AVENUE
FairOver: UNNAMED STRM
.5 MI E OF 60TH ST, Rock Island, IL
Built 2011 Load: 32.4 t ADT: 1,550
ARSENAL ROAD
FairOver: BIKE PATH,LEVEE,BNSF
N.EDGE, ROCK ISLAND, Rock Island, IL
Built 1976 Load: 32.4 t ADT: 6,600
IL 142
FairOver: CREEK
0.20 MI S COLLEGE RD, Saline, IL
Built 1930 Load: 32.4 t ADT: 2,900
TR 293
FairOver: BLACKMAN CREEK
1 MI SE MITCHELVILLE, Saline, IL
Built 1980 Load: 32.4 t ADT: 25
FAS 902-CH 7
FairOver: HORSHOE CREEK
3 MILE SW EQUALITY, Saline, IL
Built 1981 Load: 32.4 t ADT: 350
CH 1
FairOver: UNNAMED STREAM
2.5 MI N OF RALEIGH, Saline, IL
Built 1996 Load: 32.4 t ADT: 350
TR 22
FairOver: BRUSHY CREEK
1 MI E OF WMSN CO LI, Saline, IL
Built 2004 Load: 32.4 t ADT: 25
TR 126A
FairOver: LONG BRANCH
1 MI S HAMILTON CO, Saline, IL
Built 2007 Load: 32.4 t ADT: 10
TR 225
FairOver: MID. FK. SALINE R.
2.5 MI E ILL 34, Saline, IL
Built 2006 Load: 32.4 t ADT: 50
DIRKSEN PKWY (SB)
FairOver: NS RR & IC RR
.5M S SANG AVE, Sangamon, IL
Built 1939 Load: 32.4 t ADT: 16,100
I-72 / US 36 (EB)
FairOver: NORFOLK SOUTHERN RR
1.2M E WABASH INTCHG, Sangamon, IL
Built 1969 Load: 32.4 t ADT: 10,150
I-72 / US 36 (WB)
FairOver: NORFOLK SOUTHERN RR
1.2M E WABASH INTCHG, Sangamon, IL
Built 1969 Load: 32.4 t ADT: 10,150
DIRKSEN PKWY (NB)
FairOver: NS RR & IC RR
.5M S SANG AVE, Sangamon, IL
Built 1982 Load: 32.4 t ADT: 16,100
OLD US 36
FairOver: BR LONG POINT SLOUGH
.04M E CH 33,ILIOPOL, Sangamon, IL
Built 1975 Load: 32.4 t ADT: 1,000
Showing 9,401-9,450 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.