US Bridges

Il 251 over Drainage Ditch

Good

Winnebago County, Illinois · 1.5 MI S US20 Bypass · Structure no. 101205000000000

Built
2019
6 years old
Condition
Good
inspected November 2021
Type
Culvert
Concrete
Length
52 ft
4 main spans
Daily traffic
7,600
2023 count
Owner
State
State Highway Agency

About this bridge

Il 251 over Drainage Ditch is a concrete culvert carrying Il 251 over Drainage Ditch in Winnebago County, Illinois. It was built in 2019, so it is 6 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,600 vehicles a day, roughly 7% of them trucks, projected to reach 7,878 by 2046. The structure is 52 ft (15.9 m) long and 266 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIl 251
CrossesDrainage Ditch
Location1.5 MI S US20 Bypass
RouteState Highway 251
CountyWinnebago County
StateIllinois
Coordinates42.20118, -89.07241
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 25 or greater
Structure length52 ft (15.9 m)
Longest span13 ft (3.9 m)
Deck width266 ft (81.1 m)
Roadway width144 ft (43.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,600 (2023)
Projected traffic7,878 by 2046
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Il 251 over Drainage Ditch built?

It was built in 2019, making it 6 years old in 2025.

What condition is Il 251 over Drainage 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 November 2021.

How much traffic does Il 251 over Drainage Ditch carry?

About 7,600 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Il 251 over Drainage Ditch?

The structure is 52 ft (15.9 m) long with a longest span of 13 ft (3.9 m) and a deck 266 ft wide.

Who owns Il 251 over Drainage Ditch?

It is owned by the State Highway Agency.