Stephenson County, IL

332 public highway bridges

Stephenson County Bridge Snapshot

Stephenson County, Illinois contains 332 public highway bridges in the FHWA National Bridge Inventory. Roughly 60.8% are rated “Good,” 32.5% “Fair,” 2.7% “Poor,” and 2.7% 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.

332
Total Bridges
60.8%
Good
2.7%
Poor
2.7%
Structurally Deficient

Condition Distribution

Good
60.8% (202)
Fair
32.5% (108)
Poor
2.7% (9)
SD
2.7% (9)

All Bridges (332)

ILL 26

Fair

Over: STREAM

2 MI. S. OF FREEPORT, Stephenson, IL

Built 1977 Load: 38.2 t ADT: 4,750

S. PARK ROAD

Fair

Over: YELLOW CREEK

S. ENT TO KRAPE PARK, Stephenson, IL

Built 1934 Load: 38.2 t ADT: 125

US 20 WB

Fair

Over: WICKHAM CREEK

4.0 MI W WINN CO LN, Stephenson, IL

Built 1983 Load: 40.2 t ADT: 12,700

US 20 EB

Fair

Over: WICKHAM CREEK

4 MI W. WINNEBAGO CO, Stephenson, IL

Built 1999 Load: 40.2 t ADT: 12,700

PEARL CITY RD.

Fair

Over: YELLOW CR. BR.

PEARL CITY, Stephenson, IL

Built 1940 Load: 40.5 t ADT: 2,650

IL 26

Fair

Over: DRAINAGE DITCH

2.6 MI N CEDARVILLE, Stephenson, IL

Built 1995 Load: 40.8 t ADT: 4,550

ILL RT 75

Fair

Over: ROCK RUN CREEK

1.3 MI E ROCK CITY, Stephenson, IL

Built 2011 Load: 43.1 t ADT: 3,300

IL 26

Fair

Over: YELLOW CREEK

S EDGE OF FREEPORT, Stephenson, IL

Built 1988 Load: 43.4 t ADT: 12,600

US 20 WB

Fair

Over: PECATONICA RIVER

NE OF FREEPORT, Stephenson, IL

Built 2008 Load: 43.4 t ADT: 6,800

US ROUTE 20 WB

Fair

Over: BIKE TRAIL

1.75 MI W OF IL 26, Stephenson, IL

Built 2011 Load: 44.1 t ADT: 6,150

US 20 BR

Fair

Over: SMALL CREEK

1.5 MI E FREEPORT, Stephenson, IL

Built 1956 Load: 45.0 t ADT: 7,000

E. CEDARVILLE RD.

Fair

Over: BROWN CREEK

2.0 MI SE DAKOTA, Stephenson, IL

Built 1940 Load: 45.0 t ADT: 950

US20 FREPORT BYPS

Fair

Over: PECATONICA RIVER

2.5 MI W OF IL 26, Stephenson, IL

Built 1987 Load: 46.3 t ADT: 6,150

US ROUTE 20 WB

Fair

Over: PECATONICA RIVER

2.5 MI W IL RTE 26, Stephenson, IL

Built 2011 Load: 46.7 t ADT: 6,150

US RT 20

Fair

Over: YELLOW CREEK

1.5 MI W ILL 73, Stephenson, IL

Built 1970 Load: 48.0 t ADT: 5,750

US 20 BR

Fair

Over: CN RR

0.5 MI E FREEPORT, Stephenson, IL

Built 1956 Load: 48.0 t ADT: 7,000

IL 73

Fair

Over: YELLOW CREEK

0.5 MI N PEARL CITY, Stephenson, IL

Built 1992 Load: 53.1 t ADT: 2,350

US20 FREEPORT BYPA

Fair

Over: PECATONICA RIV TRIB

1.25 MI W OF IL 26, Stephenson, IL

Built 1987 Load: 53.1 t ADT: 6,150

US 20 BR

Fair

Over: YELLOW CREEK

1 MI E FREEPORT, Stephenson, IL

Built 1956 Load: 54.1 t ADT: 7,000

US 20 & PRIVATE RD

Fair

Over: SILVER CREEK TRIB

4 MI E OF FREEPORT, Stephenson, IL

Built 1959 Load: 54.1 t ADT: 12,700

US 20

Fair

Over: CN RAILROAD

2 MI. E. OF ELROY, Stephenson, IL

Built 2010 Load: 69.3 t ADT: 8,050

WEST BABLER ROAD

Good

Over: BRUSH CREEK

2.0 MI SE ORANGEVILL, Stephenson, IL

Built 1957 ADT: 50

E MCCONELL RD

Good

Over: CEDAR CREEK

0.3 mi N of DAKOTA RD, Stephenson, IL

Built 2022 ADT: 700

RIVER RD.

Good

Over: BR PECATONICA RIVER

6.0 MI E FREEPORT, Stephenson, IL

Built 1953 Load: 12.3 t ADT: 275

TR-224 N AFOLKEY R

Good

Over: BR OF CEDAR CREEK

2.0 MI W OF DAKOTA, Stephenson, IL

Built 1966 Load: 12.3 t ADT: 525

GERBICK RD

Good

Over: BR OF YELLOW CREEK

4.5 MI NW OF LENA, Stephenson, IL

Built 1962 Load: 13.0 t ADT: 50

E KELLY RD

Good

Over: CN RR

1 MI W WINN CO LN, Stephenson, IL

Built 1901 Load: 13.6 t ADT: 50

EAST ST JAMES RD

Good

Over: CEDAR CREEK

5.0 MI E ORANGEVILLE, Stephenson, IL

Built 1954 Load: 13.9 t ADT: 75

LOUISA RD

Good

Over: BR OF WADDAMS CREEK

0.7 MI W ILL RT 73, Stephenson, IL

Built 1966 Load: 16.8 t

E. HICKORY GROVE R

Good

Over: CEDAR CREEK

5 MI N ILL 75, Stephenson, IL

Built 1957 Load: 17.5 t ADT: 150

W. PRAIRIE ROAD

Good

Over: BR OF YELLOW CREEK

5.0 MI SW OF FREEPOR, Stephenson, IL

Built 1969 Load: 18.1 t ADT: 50

WINNESHEIK ROAD

Good

Over: PINK CREEK

5.0 MI S OF DAVIS, Stephenson, IL

Built 1968 Load: 19.8 t ADT: 75

NORTH UNITY RD

Good

Over: SPRING CREEK

3.5 MI NE OF LENA, Stephenson, IL

Built 1954 Load: 20.1 t ADT: 50

E BRICK SCHOOL ROA

Good

Over: WINNESHIEK CREEK

1.6 MI E OF IL RT 75, Stephenson, IL

Built 1973 Load: 20.4 t ADT: 50

S SHANNON ROAD

Good

Over: LOST CREEK

7.0 MI SW FREEPORT, Stephenson, IL

Built 1957 Load: 20.7 t ADT: 450

RANGE RD

Good

Over: BR OF PECATONICA RIV

3.5 MI E OF LENA, Stephenson, IL

Built 1969 Load: 20.7 t ADT: 50

E. RIDOTT ROAD

Good

Over: WICKHAM CREEK

1.5 MI N OF US RT 20, Stephenson, IL

Built 1959 Load: 21.4 t ADT: 150

NORTH SUNNYSIDE RD

Good

Over: BR OF YELLOW CREEK

4.0 MI SW OF LENA, Stephenson, IL

Built 1971 Load: 21.7 t ADT: 50

WEST GREENBUSH ROA

Good

Over: BR OF YELLOW CREEK

2.5 MI SW OF LENA, Stephenson, IL

Built 1962 Load: 22.0 t ADT: 75

S FARWELL BRIDGE R

Good

Over: SUMNER CREEK BRANCH

1.0 MI S OF US RT 20, Stephenson, IL

Built 1969 Load: 22.0 t ADT: 150

E WINNESHEIK ROAD

Good

Over: ROCK RUN CREEK

4.5 MI S ROCK CITY, Stephenson, IL

Built 1972 Load: 22.4 t ADT: 125

WEST BUTZ ROAD

Good

Over: LOST CREEK

5.0 M SE PEARL CITY, Stephenson, IL

Built 1971 Load: 22.7 t ADT: 75

TR-111 (MAIN RD)

Good

Over: BR OF YELLOW CREEK

1.5 MI W OF LENA, Stephenson, IL

Built 1939 Load: 22.7 t ADT: 425

BASSWOOD ROAD

Good

Over: BR OF PECATONICA RIV

SOUTH OF FAS RT.66, Stephenson, IL

Built 1964 Load: 23.7 t ADT: 75

NORTH AYP ROAD

Good

Over: BR OF PECATONICA RIV

1.2 MI N OF ILL 20, Stephenson, IL

Built 1965 Load: 24.0 t ADT: 400

S LOST CREEK ROAD

Good

Over: LOST CREEK

7 MI SW FREEPORT, Stephenson, IL

Built 1965 Load: 24.0 t ADT: 50

NORTH FLANSBURG RD

Good

Over: SPRING CREEK

4.5 MI NE OF LENA, Stephenson, IL

Built 1970 Load: 24.0 t ADT: 150

WIRE RD

Good

Over: BR OF PECATONICA RIV

1.0 MI W ILL RT 73, Stephenson, IL

Built 1963 Load: 24.3 t ADT: 25

FLANSBURG RD

Good

Over: BR OF PECATONICA RIV

0.7 MI N US RT 20, Stephenson, IL

Built 1957 Load: 25.9 t ADT: 250

ROCK CITY RD

Good

Over: BROWN CREEK

4 MI SW DAVIS, Stephenson, IL

Built 1962 Load: 27.2 t ADT: 900

Related

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