US Bridges

I-88 WB over Moline RD

Fair

Whiteside County, Illinois · 4 MI W Rock Falls · Structure no. 098007400000000

Built
1974
51 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
162 ft
1 main span
Daily traffic
6,300
2023 count
Owner
State
State Highway Agency

About this bridge

I-88 WB over Moline RD is a steel stringer/multi-beam or girder carrying I-88 WB over Moline RD in Whiteside County, Illinois. It was built in 1974, so it is 51 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 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 6,300 vehicles a day, roughly 35% of them trucks, projected to reach 5,858 by 2046. The structure is 162 ft (49.4 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-88 WB
CrossesMoline RD
Location4 MI W Rock Falls
RouteInterstate 88
CountyWhiteside County
StateIllinois
Coordinates41.76114, -89.78888
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating67.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20 + Mod
Structure length162 ft (49.4 m)
Longest span97 ft (29.6 m)
Deck width50 ft (15.2 m)
Roadway width45 ft (13.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2023)
Projected traffic5,858 by 2046
Trucks35%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-88 WB over Moline RD built?

It was built in 1974, making it 51 years old in 2025.

What condition is I-88 WB over Moline 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 January 2025.

How much traffic does I-88 WB over Moline RD carry?

About 6,300 vehicles per day (2023 count), of which roughly 35% are trucks.

How long is I-88 WB over Moline RD?

The structure is 162 ft (49.4 m) long with a longest span of 97 ft (29.6 m) and a deck 50 ft wide.

Who owns I-88 WB over Moline RD?

It is owned by the State Highway Agency.