US Bridges

Ill 251 over Spring Creek RD

Fair

Winnebago County, Illinois · 1.4 MI N Whitman ST · Structure no. 101019000000000

Built
2012
13 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
263 ft
4 main spans
Daily traffic
29,700
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 251 over Spring Creek RD is a steel continuous stringer/multi-beam or girder carrying Ill 251 over Spring Creek RD in Winnebago County, Illinois. It was built in 2012, so it is 13 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 29,700 vehicles a day, roughly 6% of them trucks, projected to reach 32,118 by 2046. The structure is 263 ft (80.3 m) long and 122 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesIll 251
CrossesSpring Creek RD
Location1.4 MI N Whitman ST
RouteState Highway 251
CountyWinnebago County
StateIllinois
Coordinates42.28866, -89.0611
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating98.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length263 ft (80.3 m)
Longest span71 ft (21.5 m)
Deck width122 ft (37.2 m)
Roadway width116 ft (35.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,700 (2023)
Projected traffic32,118 by 2046
Trucks6%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemYes

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 Ill 251 over Spring Creek RD built?

It was built in 2012, making it 13 years old in 2025.

What condition is Ill 251 over Spring Creek RD 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 September 2024.

How much traffic does Ill 251 over Spring Creek RD carry?

About 29,700 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Ill 251 over Spring Creek RD?

The structure is 263 ft (80.3 m) long with a longest span of 71 ft (21.5 m) and a deck 122 ft wide.

Who owns Ill 251 over Spring Creek RD?

It is owned by the State Highway Agency.