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
FAS 2936 (UNMARKED
FairOver: BOAR CREEK DITCH
1.1 MI N VILLA RIDGE, Pulaski, IL
Built 1979 Load: 41.8 t ADT: 850
FAS 938-CH 7
FairOver: TRIB OF CACHE RIVER
0.5 MI SE OF ULLIN, Pulaski, IL
Built 1991 Load: 41.8 t ADT: 1,450
FAI 280 EB
FairOver: MILL CREEK
.6 MI E OF US 67, Rock Island, IL
Built 1968 Load: 41.8 t ADT: 9,850
FAI 280 WB
FairOver: MILL CREEK
.6 MI E OF US 67, Rock Island, IL
Built 1968 Load: 41.8 t ADT: 9,850
ILL 92 SB(CENT FRW
FairOver: ROCK RIVER-HEN CANAL
.5 MI S 31ST ST R.I., Rock Island, IL
Built 1963 Load: 41.8 t ADT: 13,100
ILL 92 NB(CENT FRW
FairOver: ROCK RIVER-HEN CANAL
.5 MI S 31ST ST R.I., Rock Island, IL
Built 1963 Load: 41.8 t ADT: 13,100
IL 104
FairOver: BRUSH CREEK
0.90 mi E I-55, Sangamon, IL
Built 1962 Load: 41.8 t ADT: 5,450
ILL 104
FairOver: SUGAR CREEK
1.2MI E AUBURN, Sangamon, IL
Built 1993 Load: 41.8 t ADT: 6,000
OSCEOLA ROAD
FairOver: SPOON RIVER TRIB
0.8 MI N OF ILL 93, Stark, IL
Built 2008 Load: 41.8 t ADT: 75
LAGOON RD - TR 237
FairOver: STREAM
E.CTR-26-T23NR2W, Tazewell, IL
Built 1969 Load: 41.8 t ADT: 75
KEYSER RD - TR 310
FairOver: LITTLE MACKINAW R.
SW-34-T24NR2W, Tazewell, IL
Built 1971 Load: 41.8 t ADT: 100
KEYSER RD - TR 310
FairOver: LITTLE MACKINAW R.
SW-34-T24NR2W, Tazewell, IL
Built 1972 Load: 41.8 t ADT: 100
ILL 127
FairOver: LINGLE CREEK
0.3 MI N MILL CREEK, Union, IL
Built 1985 Load: 41.8 t ADT: 900
ILL 136
FairOver: MISSISSIPPI RV & RR
IN NORTH CLINTON, Whiteside, IL
Built 1974 Load: 41.8 t ADT: 10,500
I- 80 EB
FairOver: RR - METRA
3.8 M E OF US-30, Will, IL
Built 1966 Load: 41.8 t ADT: 34,400
I- 80 WB
FairOver: RR - METRA
3.8 M E US-30, Will, IL
Built 1966 Load: 41.8 t ADT: 34,400
BELTLINE RD
FairOver: S CHANNEL ROCK RIV
0.23 MI SOUTH ILL 2, Winnebago, IL
Built 1986 Load: 41.8 t ADT: 10,900
IL 251
FairOver: KISHWAUKEE RIVER
AT NEW MILLFORD, Winnebago, IL
Built 1996 Load: 41.8 t ADT: 3,300
PELLEY ROAD
FairOver: FULLER CREEK
0.5 MI W OF RT 2, Winnebago, IL
Built 1962 Load: 41.8 t ADT: 550
ATWOOD ROAD
FairOver: S.KINNIKINNICK CR
0.2 MI S BURR OAK RD, Winnebago, IL
Built 1973 Load: 41.8 t ADT: 1,500
CH 3
FairOver: Trib Walnut Crk
0.43 MI N of CH 10, Woodford, IL
Built 1966 Load: 41.8 t ADT: 225
CH 15(FAS 512)
FairOver: BRANCH OF SALT FORK
W SIDE OF SIDNEY, Champaign, IL
Built 1982 Load: 42.1 t ADT: 3,100
ILL 1(FAP 332)
FairOver: BIG CREEK
2 MI N MARSHALL, Clark, IL
Built 1954 Load: 42.1 t ADT: 5,150
FAS 1784
FairOver: LOST CREEK
SHATTUC, Clinton, IL
Built 1958 Load: 42.1 t ADT: 1,650
IL 58 (GOLF RD)
FairOver: POPLAR CREEK
1 M W IL 59, Cook, IL
Built 1978 Load: 42.1 t ADT: 11,800
25th Avenue
FairOver: Union Pacific RR
.3 M S of Lake St, Cook, IL
Built 2016 Load: 42.1 t ADT: 21,500
FAU-2635 Prospect
FairOver: Springbrook
0.4 MI N OF IL-19, DuPage, IL
Built 1994 Load: 42.1 t ADT: 7,900
GARY AV
FairOver: SOO-METRA RR
0.5 MI N CENTRAL AV, DuPage, IL
Built 1993 Load: 42.1 t ADT: 5,650
FAP-322 (US-51)
FairOver: HOFFMAN CREEK
5 MI N VANDALIA, Fayette, IL
Built 1954 Load: 42.1 t ADT: 3,800
FAI 70
FairOver: STREAM
MP 70.04, Fayette, IL
Built 1962 Load: 42.1 t ADT: 23,800
ILL 41
FairOver: GALLETT CR
2 MI S OF AVON, Fulton, IL
Built 2013 Load: 42.1 t ADT: 1,600
SULLIVAN RD - TR 2
FairOver: GAINES BRANCH
SE-19-T3NR1E, Fulton, IL
Built 1953 Load: 42.1 t ADT: 50
FAI 80 WBL
FairOver: E FORK NETTLE CR
1.3 MI W OF ILL 47, Grundy, IL
Built 1958 Load: 42.1 t ADT: 15,300
US 136
FairOver: DRAINAGE DITCH
1.7M W IL 61, Hancock, IL
Built 1991 Load: 42.1 t ADT: 3,400
IL 78
FairOver: GREEN RIVER
2.0 MI S HOOPOLE RD, Henry, IL
Built 1981 Load: 42.1 t ADT: 1,300
ILL 47
FairOver: FOX RIVER
0.95 MI S OF US 34, Kendall, IL
Built 1984 Load: 42.1 t ADT: 24,800
IL 137
FairOver: DES PLAINES RIVER
0.3 M E OF IL 21, Lake, IL
Built 1933 Load: 42.1 t ADT: 24,200
I-39/US 51 SB
FairOver: BAILEY CREEK
0.49 MI S OF CH 54, LaSalle, IL
Built 1989 Load: 42.1 t ADT: 9,700
I-39/US 51 NB
FairOver: BAILEY CREEK
0.49 MI S OF CH 54, LaSalle, IL
Built 1989 Load: 42.1 t ADT: 9,700
IL 10
FairOver: SUGAR CREEK
3.4M E NEW HOLLAND*, Logan, IL
Built 1931 Load: 42.1 t ADT: 2,000
TR 224
FairOver: BEAR CREEK
4.0 MI NW CARLINVILL, Macoupin, IL
Built 1957 Load: 42.1 t ADT: 50
TR 440
FairOver: CAHOKIA CREEK
1 MI SO EGARVILLE, Macoupin, IL
Built 1992 Load: 42.1 t ADT: 25
TR 133
FairOver: UNNAMED STREAM
0.1 MI E OF TR 142A, Massac, IL
Built 1990 Load: 42.1 t ADT: 275
I-55 SB
FairOver: TURKEY CREEK
1.5 MI SW LEXINGTON, McLean, IL
Built 1973 Load: 42.1 t ADT: 11,900
I-55 NB
FairOver: TURKEY CREEK
1.5 MI NW LEXINGTON, McLean, IL
Built 1973 Load: 42.1 t ADT: 11,900
US 51 SB
FairOver: KICKAPOO CREEK
1 MI N OF US 136, McLean, IL
Built 1986 Load: 42.1 t ADT: 12,300
US 51 NB
FairOver: KICKAPOO CREEK
1 MI N OF US 136, McLean, IL
Built 1986 Load: 42.1 t ADT: 12,300
IL 64
FairOver: DRAINAGE DITCH
5.7 MI E JCT ILL 26, Ogle, IL
Built 1955 Load: 42.1 t ADT: 1,500
US 24 & ILL 9 (WB)
FairOver: LITTLE LAMARSH CREEK
1 MI W OF MAPLETON, Peoria, IL
Built 1977 Load: 42.1 t ADT: 10,800
ELLIOTT STREET #55
FairOver: BALTIMORE & OHIO RR
OLNEY, Richland, IL
Built 1979 Load: 42.1 t ADT: 225
Showing 12,401-12,450 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.