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
GLASFORD-CANTON RD
Structurally DeficientOver: E BR COPPERAS CREEK
NW 1/4 18 TIMBER TWP, Peoria, IL
Built 1983 Load: 26.9 t ADT: 700
TR 249
Structurally DeficientOver: ADAMS CREEK
1 MI. W. OF LADD, Bureau, IL
Built 1963 Load: 27.2 t ADT: 175
WHEELER ROAD
Structurally DeficientOver: WELCH CREEK
0.2 MI W DAUBERMN RD, Kane, IL
Built 1974 Load: 27.2 t ADT: 150
FAU 7355
Structurally DeficientOver: LAKE DECATUR
LK DECATUR W SIDE, Macon, IL
Built 1957 Load: 27.2 t ADT: 2,200
NB ILL 29
Structurally DeficientOver: DICKISON RUN CREEK
0.5 MI N MOSSVILLE, Peoria, IL
Built 1958 Load: 27.2 t ADT: 14,400
TR 232
Structurally DeficientOver: COX CREEK
T6S--R5W @STEELEVILL, Randolph, IL
Built 1981 Load: 27.2 t ADT: 225
WB US 150
Structurally DeficientOver: ILL RIVER, T&P RR
IN PEORIA, Tazewell, IL
Built 1982 Load: 27.2 t ADT: 30,000
TR-66
Structurally DeficientOver: E-BRANCH PARTRIDGE
2MI W-IL RT89, Woodford, IL
Built 1995 Load: 27.2 t ADT: 275
DENNY ROAD
Structurally DeficientOver: PISCASAW CREEK
2.5 SE POPLAR GROVE, Boone, IL
Built 1977 Load: 27.5 t ADT: 50
SCENIC BLUFF ROAD
Structurally DeficientOver: DEER CREEK
2 M SE OF SAVANNA, Carroll, IL
Built 1982 Load: 27.5 t ADT: 50
TR 307
Structurally DeficientOver: MILLER BRANCH
4MI E MORRISONVILLE, Christian, IL
Built 1957 Load: 27.5 t ADT: 50
NORTH RD TR-11
Structurally DeficientOver: COLLINS RUN
.15 MI E BRISBIN RD, Grundy, IL
Built 1976 Load: 27.5 t ADT: 375
CH-6 (BROOKLYN RD)
Structurally DeficientOver: WILLOW CREEK
0.5 MI N US 30, Lee, IL
Built 1957 Load: 27.5 t ADT: 250
FAS 1439 - CH 8
Structurally DeficientOver: CAMP CREEK
NE-20-T4NR3W, McDonough, IL
Built 1937 Load: 27.5 t ADT: 200
MCCUE ROAD
Structurally DeficientOver: KISHWAUKEE RIVER
0.6 MI S OF IL 176, McHenry, IL
Built 1973 Load: 27.5 t ADT: 400
TR-73 (Allendale R
Structurally DeficientOver: NIPPERSINK CR
0.4 MI E OF IL 47, McHenry, IL
Built 1978 Load: 27.5 t ADT: 850
PILGRIM RD
Structurally DeficientOver: SEUEN MILE BRANCH
2.0 M E OF WOOSUNG, Ogle, IL
Built 1982 Load: 27.5 t ADT: 50
ILL 29
Structurally DeficientOver: BARRVILLE CREEK
2 MI S OF SPARLAND, Peoria, IL
Built 1948 Load: 27.5 t ADT: 4,950
PLUM HILL TR 180
Structurally DeficientOver: LOOP CREEK
0.3 MI S ILL 177, St. Clair, IL
Built 1980 Load: 27.5 t ADT: 350
US 30 EAST BOUND
Structurally DeficientOver: DESPLAINES RIVER
0.8 MI W OF ILL 171, Will, IL
Built 1933 Load: 27.5 t ADT: 11,110
COLER AV(MS 6120)
Structurally DeficientOver: BONEYARD CREEK
N OF GREEN ST, Champaign, IL
Built 1900 Load: 27.9 t ADT: 225
TR 17 A
Structurally DeficientOver: GREASY CREEK
2 MI NE OF RARDIN, Coles, IL
Built 1988 Load: 27.9 t ADT: 50
RAND RD
Structurally DeficientOver: DES PLAINES RIVER
0.5 M NW DEMPSTER RD, Cook, IL
Built 1928 Load: 27.9 t ADT: 25,500
TR-60
Structurally DeficientOver: MORRIS CREEK
2 MI NW SHUMWAY, Effingham, IL
Built 1909 Load: 27.9 t ADT: 100
BRERETON RD-TR 111
Structurally DeficientOver: COPPERAS CREEK
NE-11-T7NR4E, Fulton, IL
Built 1977 Load: 27.9 t ADT: 175
BRISBIN RD FAU401
Structurally DeficientOver: COLLINS RUN
1.43 MI S MINOOKA RD, Grundy, IL
Built 1978 Load: 27.9 t ADT: 1,100
TR-324
Structurally DeficientOver: CONTRARY CREEK
2 MI S DALE, Hamilton, IL
Built 1909 Load: 27.9 t ADT: 75
TR 280
Structurally DeficientOver: TRIB. TO MUD CR
1.5 MI SW MILFORD, Iroquois, IL
Built 1971 Load: 27.9 t ADT: 75
TR 452
Structurally DeficientOver: STREAM
2.5 MI S. 5 E EFFNER, Iroquois, IL
Built 1977 Load: 27.9 t ADT: 25
TOWNSHIP ROAD NO.
Structurally DeficientOver: SMALLPOX CREEK
6 MI E GALENA, Jo Daviess, IL
Built 1957 Load: 27.9 t ADT: 375
GROVE RD(FAU 7401)
Structurally DeficientOver: SAND CREEK
0.9 MI E FRANKLIN, Macon, IL
Built 1909 Load: 27.9 t ADT: 850
FAS 929
Structurally DeficientOver: ICGRR
ROUND KNOB, Massac, IL
Built 1985 Load: 27.9 t ADT: 650
TR139/OUTLET RD
Structurally DeficientOver: MONROE CITY CK
SEC 10 RD DISTRICT10, Monroe, IL
Built 1978 Load: 27.9 t ADT: 75
PLUCKER ROAD
Structurally DeficientOver: BR OF STILLMAN CREEK
2.5 M SW STILLMAN VA, Ogle, IL
Built 1980 Load: 27.9 t ADT: 75
HOLT ROAD
Structurally DeficientOver: AUX SABLE CREEK
HOLT RD AUX SABLE, Kendall, IL
Built 1977 Load: 28.2 t ADT: 500
TR 37
Structurally DeficientOver: LITTLE INDIAN CREEK
N 45TH,E 2150, LaSalle, IL
Built 1974 Load: 28.2 t ADT: 200
FAU 7355(CH 24)
Structurally DeficientOver: LAKE DECATUR
LK DECATUR E SIDE, Macon, IL
Built 1957 Load: 28.2 t ADT: 2,200
OLD US 51 (FAS 179
Structurally DeficientOver: CROOKED CREEK
.3 MI N CENTRAL CITY, Marion, IL
Built 1954 Load: 28.2 t ADT: 1,450
TR 142 A
Structurally DeficientOver: LYNN CREEK
4 MI NW OF GAUS, Moultrie, IL
Built 1956 Load: 28.2 t ADT: 100
TR 294 A
Structurally DeficientOver: COLD RUN CREEK
3.0MI NW NEBO, Pike, IL
Built 1998 Load: 28.2 t ADT: 50
CH 6
Structurally DeficientOver: INDIAN CREEK
0.7 MI E OF IL 142, Saline, IL
Built 1992 Load: 28.2 t ADT: 75
OLD IL 26
Structurally DeficientOver: E BR RICHLAND CREEK
.7 MI N ORANGEVILLE, Stephenson, IL
Built 1927 Load: 28.2 t ADT: 475
NETTLE CREEK RD CH
Structurally DeficientOver: WEST FORK NETTLE CR
0.36 MI N OF TR 39, Grundy, IL
Built 1976 Load: 28.5 t ADT: 175
GRAND RIDGE ROAD
Structurally DeficientOver: BILLS RUN
0.6 MI E KINSMAN RD, Grundy, IL
Built 1939 Load: 28.5 t ADT: 1,150
TR 86 SARATOGA RD
Structurally DeficientOver: W FORK NETTLE CREEK
0.67 MI N HOGE RD, Grundy, IL
Built 1983 Load: 28.5 t ADT: 275
NELSON RD TR-15
Structurally DeficientOver: E. FK. NETTLE CR
.39 MI E.SARATOGA RD, Grundy, IL
Built 1991 Load: 28.5 t ADT: 200
BROADWAY ST N/MS60
Structurally DeficientOver: CLAYPOOL DRAIN DITCH
0.5 MI N MC ARDLE RD, Grundy, IL
Built 1982 Load: 28.5 t ADT: 1,650
FAS261 CH34
Structurally DeficientOver: STREAM
N 27TH,E 950, LaSalle, IL
Built 1961 Load: 28.5 t ADT: 1,000
FAS-2823
Structurally DeficientOver: EAGLE SLOUGH DRAIN
5 MI S FAIRFIELD, Wayne, IL
Built 1987 Load: 28.5 t ADT: 75
THEODORE STREET
Structurally DeficientOver: ROCK RUN CREEK
1.5M E. I-55, Will, IL
Built 1996 Load: 28.5 t ADT: 8,150
Showing 27,501-27,550 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |