US Bridges

I-88 WB over Meredosia Ditch

Fair

Rock Island County, Illinois · At Whiteside CO LN · Structure no. 081013400000000

Built
1976
49 years old, rebuilt 2022
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
237 ft
3 main spans
Daily traffic
6,250
2023 count
Owner
State
State Highway Agency

About this bridge

I-88 WB over Meredosia Ditch is a steel continuous stringer/multi-beam or girder carrying I-88 WB over Meredosia Ditch in Rock Island County, Illinois. It was built in 1976 and reconstructed in 2022, so it is 49 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 6,250 vehicles a day, roughly 33% of them trucks, projected to reach 7,121 by 2046. The structure is 237 ft (72.2 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-88 WB
CrossesMeredosia Ditch
LocationAt Whiteside CO LN
RouteInterstate 88
CountyRock Island County
StateIllinois
Coordinates41.64133, -90.16626
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating50.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length237 ft (72.2 m)
Longest span94 ft (28.6 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,250 (2023)
Projected traffic7,121 by 2046
Trucks33%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-88 WB over Meredosia Ditch built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2022.

What condition is I-88 WB over Meredosia Ditch 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 April 2023.

How much traffic does I-88 WB over Meredosia Ditch carry?

About 6,250 vehicles per day (2023 count), of which roughly 33% are trucks.

How long is I-88 WB over Meredosia Ditch?

The structure is 237 ft (72.2 m) long with a longest span of 94 ft (28.6 m) and a deck 42 ft wide.

Who owns I-88 WB over Meredosia Ditch?

It is owned by the State Highway Agency.