US Bridges

Winslow Road over Pecatonica River

Fair

Stephenson County, Illinois · Winslow · Structure no. 089302600000000

Built
1941
84 years old, rebuilt 1987
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
416 ft
7 main spans
Daily traffic
1,200
2024 count
Owner
County
County Highway Agency

About this bridge

Winslow Road over Pecatonica River is a steel continuous stringer/multi-beam or girder carrying Winslow Road over Pecatonica River in Stephenson County, Illinois. It was built in 1941 and reconstructed in 1987, so it is 84 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,200 vehicles a day, roughly 9% of them trucks, projected to reach 1,212 by 2046. The structure is 416 ft (126.8 m) long and 33 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

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CarriesWinslow Road
CrossesPecatonica River
LocationWinslow
RouteCounty Highway 0
CountyStephenson County
StateIllinois
Coordinates42.49347, -89.78764
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length416 ft (126.8 m)
Longest span70 ft (21.3 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2024)
Projected traffic1,212 by 2046
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Winslow Road over Pecatonica River built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1987.

What condition is Winslow Road over Pecatonica River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does Winslow Road over Pecatonica River carry?

About 1,200 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Winslow Road over Pecatonica River?

The structure is 416 ft (126.8 m) long with a longest span of 70 ft (21.3 m) and a deck 33 ft wide.

Who owns Winslow Road over Pecatonica River?

It is owned by the County Highway Agency.