US Bridges

Comly Road over Coolidge Creek

Fair

Winnebago County, Illinois · 0.1 MI W Keith Road · Structure no. 101306700000000

Built
1970
55 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
50 ft
3 main spans
Daily traffic
200
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Comly Road over Coolidge Creek is a concrete culvert carrying Comly Road over Coolidge Creek in Winnebago County, Illinois. It was built in 1970, so it is 55 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.

It carries about 200 vehicles a day, roughly 17% of them trucks, projected to reach 227 by 2046. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesComly Road
CrossesCoolidge Creek
Location0.1 MI W Keith Road
RouteCounty Highway 0
CountyWinnebago County
StateIllinois
Coordinates42.2757, -89.27147
Functional classRural Local

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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.5 US tons
Inventory rating52.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 15
Structure length50 ft (15.2 m)
Longest span13 ft (4.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic227 by 2046
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Comly Road over Coolidge Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Comly Road over Coolidge 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 June 2023.

How much traffic does Comly Road over Coolidge Creek carry?

About 200 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Comly Road over Coolidge Creek?

The structure is 50 ft (15.2 m) long with a longest span of 13 ft (4.1 m).

Who owns Comly Road over Coolidge Creek?

It is owned by the Town or Township Highway Agency.