US Bridges

Perryville RD over S. Br. Willow Creek

Fair

Winnebago County, Illinois · .4 Mi. N. Harlem RD · Structure no. 101309100000000

Built
1998
27 years old
Condition
Fair
inspected August 2023
Type
Frame
Concrete
Length
44 ft
1 main span
Daily traffic
16,000
2022 count
Owner
County
County Highway Agency

About this bridge

Perryville RD over S. Br. Willow Creek is a concrete frame carrying Perryville RD over S. Br. Willow Creek in Winnebago County, Illinois. It was built in 1998, so it is 27 years old, younger 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 16,000 vehicles a day, roughly 4% of them trucks, projected to reach 17,877 by 2046. The structure is 44 ft (13.5 m) long and 113 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesPerryville RD
CrossesS. Br. Willow Creek
Location.4 Mi. N. Harlem RD
CountyWinnebago County
StateIllinois
Coordinates42.34663, -89.00872
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating46.4 US tons
Inventory rating27.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length44 ft (13.5 m)
Longest span43 ft (13.2 m)
Deck width113 ft (34.3 m)
Roadway width73 ft (22.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2022)
Projected traffic17,877 by 2046
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Perryville RD over S. Br. Willow Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Perryville RD over S. Br. Willow Creek 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 August 2023.

How much traffic does Perryville RD over S. Br. Willow Creek carry?

About 16,000 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Perryville RD over S. Br. Willow Creek?

The structure is 44 ft (13.5 m) long with a longest span of 43 ft (13.2 m) and a deck 113 ft wide.

Who owns Perryville RD over S. Br. Willow Creek?

It is owned by the County Highway Agency.