US Bridges

Ill 5 & 92 over Iais RR

Fair

Rock Island County, Illinois · 0.2 MI NE JCT Ill 84 · Structure no. 081003600000000

Built
1951
74 years old, rebuilt 1990
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
424 ft
7 main spans
Daily traffic
14,700
2023 count
Owner
State
State Highway Agency

About this bridge

Ill 5 & 92 over Iais RR is a steel stringer/multi-beam or girder carrying Ill 5 & 92 over Iais RR in Rock Island County, Illinois. It was built in 1951 and reconstructed in 1990, so it is 74 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 14,700 vehicles a day, roughly 8% of them trucks, projected to reach 15,958 by 2046. The structure is 424 ft (129.1 m) long and 75 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesIll 5 & 92
CrossesIais RR
Location0.2 MI NE JCT Ill 84
RouteState Highway 5
CountyRock Island County
StateIllinois
Coordinates41.51143, -90.39608
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
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 rating98.2 US tons
Inventory rating63.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length424 ft (129.1 m)
Longest span73 ft (22.3 m)
Deck width75 ft (22.9 m)
Roadway width70 ft (21.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,700 (2023)
Projected traffic15,958 by 2046
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.8 mi (11 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ill 5 & 92 over Iais RR built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1990.

What condition is Ill 5 & 92 over Iais RR 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 5 & 92 over Iais RR carry?

About 14,700 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Ill 5 & 92 over Iais RR?

The structure is 424 ft (129.1 m) long with a longest span of 73 ft (22.3 m) and a deck 75 ft wide.

Who owns Ill 5 & 92 over Iais RR?

It is owned by the State Highway Agency.