US Bridges

Cunningham RD over Grove Creek

FairPosted for load

Winnebago County, Illinois · 0.25 MI W Conger RD · Structure no. 101503200000000

Built
1960
65 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
250
2022 count
Owner
County
County Highway Agency

About this bridge

Cunningham RD over Grove Creek is a concrete continuous culvert carrying Cunningham RD over Grove Creek in Winnebago County, Illinois. It was built in 1960, so it is 65 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 250 vehicles a day, roughly 12% of them trucks, projected to reach 278 by 2046. The structure is 26 ft (8 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCunningham RD
CrossesGrove Creek
Location0.25 MI W Conger RD
RouteCounty Highway 0
CountyWinnebago County
StateIllinois
Coordinates42.2606, -89.32685
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating19.3 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (8 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2022)
Projected traffic278 by 2046
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Cunningham RD over Grove Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Cunningham RD over Grove 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 April 2023.

How much traffic does Cunningham RD over Grove Creek carry?

About 250 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Cunningham RD over Grove Creek?

The structure is 26 ft (8 m) long with a longest span of 13 ft (3.9 m).

Who owns Cunningham RD over Grove Creek?

It is owned by the County Highway Agency.