US Bridges

I-88 Ramp WB over Elkhorn Creek

Fair

Whiteside County, Illinois · 5.10 MI W Il 40 · Structure no. 098009200000000

Built
1972
53 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
275 ft
3 main spans
Daily traffic
700
2021 count
Owner
State
State Highway Agency

About this bridge

I-88 Ramp WB over Elkhorn Creek is a steel continuous stringer/multi-beam or girder carrying I-88 Ramp WB over Elkhorn Creek in Whiteside County, Illinois. It was built in 1972, so it is 53 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 700 vehicles a day, roughly 25% of them trucks, projected to reach 707 by 2046. The structure is 275 ft (83.7 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-88 Ramp WB
CrossesElkhorn Creek
Location5.10 MI W Il 40
CountyWhiteside County
StateIllinois
Coordinates41.76091, -89.78438
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating98.2 US tons
Inventory rating67.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length275 ft (83.7 m)
Longest span103 ft (31.5 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2021)
Projected traffic707 by 2046
Trucks25%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$683,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I-88 Ramp WB over Elkhorn Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is I-88 Ramp WB over Elkhorn 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 March 2023.

How much traffic does I-88 Ramp WB over Elkhorn Creek carry?

About 700 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is I-88 Ramp WB over Elkhorn Creek?

The structure is 275 ft (83.7 m) long with a longest span of 103 ft (31.5 m) and a deck 28 ft wide.

Who owns I-88 Ramp WB over Elkhorn Creek?

It is owned by the State Highway Agency.