US Bridges

I-88 over Stream

Fair

Rock Island County, Illinois · 0.4 MI E. of I-80 · Structure no. 081201000000000

Built
1977
48 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
40 ft
3 main spans
Daily traffic
13,800
2023 count
Owner
State
State Highway Agency

About this bridge

I-88 over Stream is a concrete culvert carrying I-88 over Stream in Rock Island County, Illinois. It was built in 1977, so it is 48 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 13,800 vehicles a day, roughly 24% of them trucks, projected to reach 13,686 by 2046. The structure is 40 ft (12.3 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-88
CrossesStream
Location0.4 MI E. of I-80
RouteInterstate 88
CountyRock Island County
StateIllinois
Coordinates41.53702, -90.33458
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.9 US tons
Inventory rating32.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length40 ft (12.3 m)
Longest span14 ft (4.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,800 (2023)
Projected traffic13,686 by 2046
Trucks24%
Lanes on structure6
Traffic directionTwo-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 over Stream built?

It was built in 1977, making it 48 years old in 2025.

What condition is I-88 over Stream 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 2024.

How much traffic does I-88 over Stream carry?

About 13,800 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is I-88 over Stream?

The structure is 40 ft (12.3 m) long with a longest span of 14 ft (4.2 m).

Who owns I-88 over Stream?

It is owned by the State Highway Agency.