Grundy County, IL
269 public highway bridges
Grundy County Bridge Snapshot
Grundy County, Illinois contains 269 public highway bridges in the FHWA National Bridge Inventory. Roughly 38.3% are rated “Good,” 27.1% “Fair,” 24.2% “Poor,” and 24.2% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.
Inspections in IL are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Condition Distribution
All Bridges (269)
FAI 55 NB
UnknownOver: MAZON RIVER @ TR 125
4.1 MI S OF REED RD, Grundy, IL
FAI 55 SB
UnknownOver: MAZON RIVER @ TR 125
4.1 MI S OF REED RD, Grundy, IL
Nettle Cr Rd CH 61
UnknownOver: FAI 80
1 M W of Seneca Int, Grundy, IL
TWP RD TR 70
UnknownOver: FAI 80
5.20 MI W ILL 47, Grundy, IL
Saratoga Rd / TR 8
UnknownOver: FAI 80
3.19 MI W OF ILL 47, Grundy, IL
Ashton Rd / TR 106
UnknownOver: FAI 80
2.21 MI W ILL 47, Grundy, IL
Brown Rd / TR 150
UnknownOver: FAI 80
4.48 MI E OF ILL 47, Grundy, IL
Pioneer Rd / TR 78
UnknownOver: FAI 80
4.20 MI W OF ILL 47, Grundy, IL
WABENA ST-MINOOKA
UnknownOver: FAI 80
0.5 M E MINOOKA INT, Grundy, IL
TR-110
UnknownOver: FAI-55
0.32 MI N LIV CO LN, Grundy, IL
TR 155
UnknownOver: I55, RT 66 & ICG RR
3 MI SW OF GARDNER, Grundy, IL
ILL 47
UnknownOver: ARMSTRONG & B & O RR
.57 S OF US 6 WEST, Grundy, IL
ILL 47
UnknownOver: BUCHANAN ST
ILL 47 IN MORRIS, Grundy, IL
FAS 272
UnknownOver: FAI 55
2.51 M S OF REED RD, Grundy, IL
FAS 299/REED RD.
UnknownOver: I-55
0.1 MI S WILL CO LN, Grundy, IL
TR 182
UnknownOver: FAI 55
4.79 MI S OF REED RD, Grundy, IL
FAS 292/GARDNER RD
UnknownOver: I 55
GARD. RD INTERCHANGE, Grundy, IL
ILL 47
UnknownOver: I 80
INTER I80 & ILL47, Grundy, IL
ASHLEY RD/FAU 5974
UnknownOver: I-80
1.24 MI E OF IL 47, Grundy, IL
FAP 623 (AT OR 623
UnknownOver: I-80 EB & WB
SENECA JUNCTION, Grundy, IL
BRISBIN RD (FAU 40
UnknownOver: FAI 80
3.72 MI E OF ILL 47, Grundy, IL
MINOOKA RD / CH 16
UnknownOver: I-80
2.56 M W Minooka Int, Grundy, IL
Lisbon Rd (FAU 596
UnknownOver: I-80
0.70 mi W of IL 47, Grundy, IL
IL 47
UnknownOver: I-55
IL47/I-55Interchange, Grundy, IL
EJ&E RR
UnknownOver: RIDGE RD/FAU384
0.66 MI S I-80, Grundy, IL
CRI&P RR
UnknownOver: LISBON ST
CRI&P RR OV LISBON S, Grundy, IL
E J & E RAILROAD
UnknownOver: FAI 80
0.41 M E MINOOKA INT, Grundy, IL
E.J.& E. RR
UnknownOver: MONDAMIN/FAU 400
AUX SABLE SEC 1, Grundy, IL
TR-58 BUFFALO RD
FairOver: WAUPECON CR
.5 M S GRAND RIDGE R, Grundy, IL
TR 3B MINOOKA ROAD
FairOver: SARATOGA CREEK
0.36 MI E LISBON RD, Grundy, IL
CAMPUS ROAD
FairOver: TRIB TO MAZON RIVER
0.2 MI S TR 159, Grundy, IL
CAMPUS ROAD
FairOver: E FK MAZON RIV
0.02 MI S TR 165, Grundy, IL
TYNAN ROAD CH C41
FairOver: MAZON RIVER
0.45 N. Bracville Rd, Grundy, IL
TR-103 O'MALLEY RD
FairOver: TRIB TO HOG RUN
.05 MI E BENNETT RD, Grundy, IL
TR 107 WAUPECAN RD
FairOver: TRIB TO HOG RUN
.25 MI E KINSMAN RD, Grundy, IL
O'MALLEY RD TR-103
FairOver: BILLS RUN
.27 MI W BUFFALO RD, Grundy, IL
RICE RD CH 15
FairOver: TRIB TO MAZON RIVER
0.2 MI E HALPIN ROAD, Grundy, IL
OLD STAGE RD CH 28
FairOver: I&M CANAL
.13 MI W NET SCH RD, Grundy, IL
LA SALLE RD TR-2
FairOver: HOG RUN
.1 MI S WAUPECAN RD, Grundy, IL
JOHNNY RUN ROAD
FairOver: JOHNNY RUN
0.1 MI N GOODFARM RD, Grundy, IL
SWELL RD TR 40
FairOver: JOHNNY RUN
.2 MI N RANSOM RD, Grundy, IL
TR-49 (STOCKDALE R
FairOver: O'BRIEN RUN
.20 MI E TR 70, Grundy, IL
TR120 OLDMAZON RD
FairOver: MURRAY SLUICE
.81 MI S GR RIDGE RD, Grundy, IL
GOODFARM RD
FairOver: MURRAY SLUICE
0.05 MI E BUFFALO RD, Grundy, IL
TR 78
FairOver: W FORK OF NETTLE CRK
.8 MI S OF NELSON RD, Grundy, IL
TR-3B MINOOKA RD
FairOver: TRIB TO AUX SABLE CR
.38 MI W BRISBIN RD, Grundy, IL
TR 71 SHABBONA RD
FairOver: TRIB TO BILLS RUN
.24 MI E SOUTHMOR RD, Grundy, IL
TR 89A/Indian Trai
FairOver: ARMSTRONG RUN
1.5 MI E OF ILL 170, Grundy, IL
MCARDLE RD-TR91A
FairOver: MAZON RIVER
3.3MI CBN HL TR91A, Grundy, IL
TR 180A Walleye Ro
FairOver: inlet off Goose Lake
0.14 MI N PEART RD., Grundy, IL
Read our methodology — how this data is sourced, computed, and verified.
Related
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |