McHenry County, IL

229 public highway bridges

McHenry County Bridge Snapshot

McHenry County, Illinois contains 229 public highway bridges in the FHWA National Bridge Inventory. Roughly 37.1% are rated “Good,” 36.7% “Fair,” 20.1% “Poor,” and 20.1% 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.

229
Total Bridges
37.1%
Good
20.1%
Poor
20.1%
Structurally Deficient

Condition Distribution

Good
37.1% (85)
Fair
36.7% (84)
Poor
20.1% (46)
SD
20.1% (46)

All Bridges (229)

NORTH UNION ROAD

Poor

Over: KISHWAUKEE RIVER

0.3 MI W OF IL 47, McHenry, IL

Built 1959 Load: 24.6 t ADT: 875

MS-3020 Center St

Poor

Over: Stream

.7MI SW ROBERTS RD, McHenry, IL

Built 1991 Load: 25.6 t ADT: 575

SULLIVAN ROAD

Poor

Over: TRIB N BR KISWKE RIV

0.1 MI N COLLINS RD, McHenry, IL

Built 1965 Load: 26.6 t ADT: 100

HARMONY ROAD

Poor

Over: COON CREEK

0.3 MI E OF PAYNE RD, McHenry, IL

Built 1980 Load: 26.6 t ADT: 725

CH-43 Millstream R

Poor

Over: S Br Kishwaukee Rvr

0.4 MI N ILL 176, McHenry, IL

Built 1964 Load: 28.2 t ADT: 1,700

HAEGERS BEND RD

Poor

Over: FOX RIV INLET

0.3 MI NW ALGONQUIN, McHenry, IL

Built 1986 Load: 28.2 t ADT: 650

CH43 (MILLSTREAM R

Poor

Over: KISHWAUKEE RIVER

0.5 MI. N. ILL. 176, McHenry, IL

Built 1964 Load: 28.5 t ADT: 1,700

ROOT ROAD

Poor

Over: RUSH CREEK

0.1 MI N OF CH 30, McHenry, IL

Built 1900 Load: 29.2 t ADT: 100

CHARLES RD

Poor

Over: Slough Creek

AT NELSON RD, McHenry, IL

Built 1947 Load: 29.8 t ADT: 6,300

US 12

Poor

Over: NIPPERSINK CR OVERFL

0.3 M N OF CO LINE, McHenry, IL

Built 1939 Load: 45.7 t ADT: 11,500

Bay Road

Poor

Over: Unnamed Tributary

0.5 mi S of Edgewood, McHenry, IL

Built 1980 Load: 89.1 t ADT: 1,550

WHITE OAKS RD

Structurally Deficient

Over: W BRANCH PISCASAW CR

1.8 MI N PERKINS RD, McHenry, IL

Built 1947 ADT: 50

VANDER KARR RD

Structurally Deficient

Over: BR OF NIPPERSINK CR

2 MI E OF IL 47, McHenry, IL

Built 1981 ADT: 1,550

LAKE VIEW DRIVE

Structurally Deficient

Over: ISLAND LAKE

N OF ILL 176, McHenry, IL

Built 1975 ADT: 450

PAULSEN RD

Structurally Deficient

Over: N BR KISHWAUKEE RIV

1.7 MI S OF STREIT R, McHenry, IL

Built 1959 Load: 6.2 t ADT: 250

COUNTY LINE RD

Structurally Deficient

Over: KISHWAUKEE OVERFLOW

0.5 M N OFUS 20, McHenry, IL

Built 1978 Load: 8.1 t ADT: 475

MARENGO ROAD

Structurally Deficient

Over: RUSH CREEK

0.6 MI S AIRPORT RD, McHenry, IL

Built 1956 Load: 8.7 t ADT: 850

ALGONQUIN RD

Structurally Deficient

Over: SPRING CR

0.1 MI SW PLUM TREE, McHenry, IL

Built 1986 Load: 8.7 t ADT: 3,200

CH-27 (JOHNSON RD)

Structurally Deficient

Over: NIPPERSINK CR

0.6 M NE DURKEE RD, McHenry, IL

Built 1978 Load: 10.7 t ADT: 300

BUNKER HILL ROAD

Structurally Deficient

Over: DRAINAGE DITCH

1.8 MI WEST OF IL 23, McHenry, IL

Built 1970 Load: 14.6 t ADT: 100

FAS-39 (HUNTER ROA

Structurally Deficient

Over: Little Beaver Creek

0.5 W WHITE OAKS RD, McHenry, IL

Built 1963 Load: 16.8 t ADT: 1,650

BARREVILLE RD

Structurally Deficient

Over: Sleepy Hollow Creek

0.4 MI N OF AMES RD, McHenry, IL

Built 1957 Load: 19.4 t ADT: 1,350

SOUTH ST RD

Structurally Deficient

Over: FRANKLINVILLE CR

0.1MI E OF ROSE FM, McHenry, IL

Built 1983 Load: 21.7 t ADT: 2,050

THAYER ROAD

Structurally Deficient

Over: NIPPERSINK CREEK

0.3 MI W OF IL 47, McHenry, IL

Built 1975 Load: 25.3 t ADT: 800

QUEEN ANNE RD

Structurally Deficient

Over: NIPPERSINK CREEK

2.7 MI N CHARLES RD, McHenry, IL

Built 1960 Load: 26.9 t ADT: 575

MCCUE ROAD

Structurally Deficient

Over: KISHWAUKEE RIVER

0.6 MI S OF IL 176, McHenry, IL

Built 1973 Load: 27.5 t ADT: 400

TR-73 (Allendale R

Structurally Deficient

Over: NIPPERSINK CR

0.4 MI E OF IL 47, McHenry, IL

Built 1978 Load: 27.5 t ADT: 850

QUEEN ANNE RD

Structurally Deficient

Over: BR OF NIPPERSINK CR

2.4 MI N OF CHARLES, McHenry, IL

Built 1960 Load: 36.6 t ADT: 575

OAKWOOD DRIVE

Structurally Deficient

Over: BOONE CREEK

.5 M S 1201 M W 31, McHenry, IL

Built 1971 Load: 42.8 t ADT: 1,150

Related

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