US Bridges

Ch 15 Indian Head over Winnegago Ditch

Good

Lee County, Illinois · 4.5 MI N Bureau CO · Structure no. 052332500000000

Built
1956
69 years old
Condition
Good
inspected February 2024
Type
Slab
Concrete
Length
66 ft
2 main spans
Daily traffic
275
2022 count
Owner
County
County Highway Agency

About this bridge

Ch 15 Indian Head over Winnegago Ditch is a concrete slab carrying Ch 15 Indian Head over Winnegago Ditch in Lee County, Illinois. It was built in 1956, so it is 69 years old, older than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 275 vehicles a day, roughly 45% of them trucks, projected to reach 202 by 2046. The structure is 66 ft (20.1 m) long and 28 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesCh 15 Indian Head
CrossesWinnegago Ditch
Location4.5 MI N Bureau CO
RouteCounty Highway 0
CountyLee County
StateIllinois
Coordinates41.65036, -89.59353
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating59 US tons
Inventory rating35.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length66 ft (20.1 m)
Longest span32 ft (9.8 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic275 (2022)
Projected traffic202 by 2046
Trucks45%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 Ch 15 Indian Head over Winnegago Ditch built?

It was built in 1956, making it 69 years old in 2025.

What condition is Ch 15 Indian Head over Winnegago Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does Ch 15 Indian Head over Winnegago Ditch carry?

About 275 vehicles per day (2022 count), of which roughly 45% are trucks.

How long is Ch 15 Indian Head over Winnegago Ditch?

The structure is 66 ft (20.1 m) long with a longest span of 32 ft (9.8 m) and a deck 28 ft wide.

Who owns Ch 15 Indian Head over Winnegago Ditch?

It is owned by the County Highway Agency.