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.

269
Total Bridges
38.3%
Good
24.2%
Poor
24.2%
Structurally Deficient

Condition Distribution

Good
38.3% (103)
Fair
27.1% (73)
Poor
24.2% (65)
SD
24.2% (65)

All Bridges (269)

TR 119 BOOTH ROAD

Fair

Over: TRIB E FK MAZON RIV

.27 MI E TYNAN ROAD, Grundy, IL

Built 1981 Load: 68.7 t ADT: 50

TR 112 MIDDLE ROAD

Good

Over: SARATOGA CREEK

0.01 MI S AIRPORT RD, Grundy, IL

Built 1986 Load: 18.5 t ADT: 125

KINSMAN RD TR-8

Good

Over: TRIB TO HOG RUN

.28 MI S WAUPECAN RD, Grundy, IL

Built 1965 Load: 24.3 t ADT: 150

LIVINGSTON RD TR-1

Good

Over: EAST FK MAZON RIVER

0.10 MI E OF TR-168, Grundy, IL

Built 1974 Load: 25.6 t ADT: 50

JEFFERSON ST

Good

Over: NETTLE CR

300 FT W NETTLE ST, Grundy, IL

Built 1964 Load: 25.9 t ADT: 3,850

TR 28 ROODS RD

Good

Over: TRIB TO NETTLE CREEK

0.24 MI N AIRPORT RD, Grundy, IL

Built 1987 Load: 28.5 t ADT: 75

LUTZ RD/MS 6100

Good

Over: TRIB TO MAZON RIVER

0.12 MI N/GARDNER RD, Grundy, IL

Built 1997 Load: 28.8 t ADT: 75

TR 105 SPRING RD

Good

Over: TRIB TO CLAYPOOL D D

0.32 MI E JUGTOWN RD, Grundy, IL

Built 1988 Load: 29.5 t ADT: 25

MINE RD TR-111

Good

Over: WAUPECON CR

.32 MI E GONNAM RD, Grundy, IL

Built 1979 Load: 29.8 t ADT: 75

TR 165 SCULLY RD

Good

Over: MURRAY RUN

.05 MI E SWELL RD, Grundy, IL

Built 1985 Load: 29.8 t ADT: 25

MINOOKA RD TR-3B

Good

Over: SARATOGA CREEK

.71 MI W MIDDLE RD, Grundy, IL

Built 1975 Load: 30.8 t ADT: 300

TR 2 LA SALLE RD

Good

Over: TRIB TO HOG RUN

0.31 MI S CH 6, Grundy, IL

Built 1987 Load: 31.1 t ADT: 50

TR180-STORM RD

Good

Over: E FORK MAZON RIVER

N OF STONEWALL RD, Grundy, IL

Built 1993 Load: 31.1 t ADT: 150

TR 110 DWIGHT RD

Good

Over: WAUPECON CREEK

.16 MI S LOWERY RD, Grundy, IL

Built 1985 Load: 31.4 t ADT: 125

VERONA RD TR-74

Good

Over: WAUPECAN CR

0.35 MI N OF CH 9, Grundy, IL

Built 1978 Load: 32.1 t ADT: 325

US 6

Good

Over: O'BRIEN RUN

4.09 MI.W.OF ILL 47, Grundy, IL

Built 1974 Load: 32.4 t ADT: 3,950

US 6 (FAP 623)

Good

Over: Rat Run Creek

1.45 MI E OF IL 170, Grundy, IL

Built 2011 Load: 32.4 t ADT: 3,200

TR 3 MINOOKA RD

Good

Over: EAST FK NETTLE CREEK

.09 MI W SCOTT SC RD, Grundy, IL

Built 1984 Load: 32.4 t ADT: 375

TR 4 LA SALLE RD

Good

Over: TRIB TO NETTLE CR

.64 MI N HOGE RD, Grundy, IL

Built 1987 Load: 32.4 t ADT: 50

TR-3B MINOOKA RD

Good

Over: VALLEY RUN

0.13 MI W ILL RT 47, Grundy, IL

Built 2009 Load: 32.4 t ADT: 300

TR 4 LA SALLE ROAD

Good

Over: STANTON CREEK

.81 MI S CH 1, Grundy, IL

Built 1983 Load: 32.4 t ADT: 75

TR 47 LONGPOINT RD

Good

Over: LONG POINTCREEK

.41 MI W US 6, Grundy, IL

Built 1987 Load: 32.4 t ADT: 25

Nettle school Road

Good

Over: O'Brien Run

.27 S.of Stockd Rd., Grundy, IL

Built 2016 Load: 32.4 t ADT: 225

TR 61 SOUTHMOR ROA

Good

Over: BILLS RUN

1.7 M NE SHABBONA RD, Grundy, IL

Built 1984 Load: 32.4 t ADT: 125

VERONA RD TR 74

Good

Over: BILLS RUN

0.31MI N. GREER RD, Grundy, IL

Built 1990 Load: 32.4 t ADT: 325

Greer Rd.

Good

Over: Bills Run

0.44 West Verona, Grundy, IL

Built 2016 Load: 32.4 t ADT: 50

WHITETIE RD TR 77

Good

Over: MAZON RIVER

0.01 MI S OXBOW RD, Grundy, IL

Built 1984 Load: 32.4 t ADT: 250

N. Prairie Dr.

Good

Over: Goose Lake

0.07 E. Lakeside Dr., Grundy, IL

Built 2015 Load: 32.4 t ADT: 125

GORHAM RD TR-80

Good

Over: TR1B TO WAVPECON CR

0.41 MI.S. GREEN CR, Grundy, IL

Built 1989 Load: 32.4 t ADT: 75

DWIGHT RD TR-110

Good

Over: MURRAY SERVICE

.45 MI N.BURKHART RD, Grundy, IL

Built 1990 Load: 32.4 t ADT: 150

TR 147, RANSOM RD

Good

Over: MURRAY SLOUGH

.17M.WE.OF VERONA RD, Grundy, IL

Built 2005 Load: 32.4 t ADT: 50

KINSMAN RD TR-6

Good

Over: JOHNNY RUN

.3 MI S CAHILL RD, Grundy, IL

Built 1979 Load: 32.4 t ADT: 50

TR 1E (LIV ROAD)

Good

Over: TRIB TO JOHNNY RUN

SEE BELOW, Grundy, IL

Built 2003 Load: 32.4 t ADT: 25

TR 56

Good

Over: JOHNNY RUN

0.1 m N GARDNER RD, Grundy, IL

Built 2010 Load: 32.4 t ADT: 25

TR-165 (Scully Roa

Good

Over: Trib W Fk Mazon Rv

0.48mi. W. Verona Rd, Grundy, IL

Built 2016 Load: 32.4 t ADT: 50

TR-155 GOODFARM RD

Good

Over: BREWSTER RUN

.12 MI E OLD MAZ RD, Grundy, IL

Built 1980 Load: 32.4 t ADT: 150

STONEWALL RD TR-15

Good

Over: BREWSTER RUN

0.46 MI E OF ILL 47, Grundy, IL

Built 1978 Load: 32.4 t ADT: 75

STONEWALL RD TR-15

Good

Over: BREWSTER RUN

.10 MI E OLD MAZ RD, Grundy, IL

Built 1979 Load: 32.4 t ADT: 75

TR-165 SCULLY RD

Good

Over: BREWSTER RUN

.13 MI E ILL 47, Grundy, IL

Built 1910 Load: 32.4 t ADT: 10

TR155

Good

Over: BREWSTER RUN

9MI E IL47 ON TR155, Grundy, IL

Built 1995 Load: 32.4 t ADT: 125

TR 131

Good

Over: MURRAY SLUICE

.42 MI W TR 110/DWIG, Grundy, IL

Built 2002 Load: 32.4 t ADT: 50

OLD MAZON RD

Good

Over: BREWSTER RUN

.10 N GOODFARM RD, Grundy, IL

Built 2008 Load: 32.4 t ADT: 50

TR 152 GORMAN ROAD

Good

Over: TRIB E FK MAZON RIV

.7 MI S SCULLY ROAD, Grundy, IL

Built 1984 Load: 32.4 t ADT: 25

OTTAWA AVE

Good

Over: NETTLE CREEK

950 F&S. FREMONT, Grundy, IL

Built 1971 Load: 32.4 t ADT: 2,450

WAUPECAN RD TR 107

Good

Over: HOG RUN CREEK

.04 MI E LASALLE RD, Grundy, IL

Built 1993 Load: 32.7 t ADT: 50

TR 86 SARATOGA RD

Good

Over: EAST FK NETTLE CREEK

.27 MI N NELSON RD, Grundy, IL

Built 1986 Load: 33.0 t ADT: 275

TR 131 BURKHART RO

Good

Over: WAUPECON CREEK

.41 MI W KINSMAN RD, Grundy, IL

Built 1984 Load: 33.0 t ADT: 75

TR 97FARMER RD

Good

Over: HOG RUN

.21 MI W-BENNIT RD, Grundy, IL

Built 1994 Load: 33.4 t ADT: 75

TR 111A MINE ROAD

Good

Over: JOHNNY RUN CREEK

.28 MI W DWIGHT ROAD, Grundy, IL

Built 1982 Load: 33.4 t ADT: 75

TR 165 SCULLY ROAD

Good

Over: JOHNNY RUN CREEK

.27 MI E LA SALLE RD, Grundy, IL

Built 1981 Load: 34.0 t ADT: 50

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial