US Bridges

23rd Ave-Moline over FAI 74

Fair

Rock Island County, Illinois · 1.5 MI S Ill 92 · Structure no. 081010500000000

Built
1970
55 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
227 ft
2 main spans
Daily traffic
9,000
2020 count
Owner
State
State Highway Agency

About this bridge

23rd Ave-Moline over FAI 74 is a steel continuous stringer/multi-beam or girder carrying 23rd Ave-Moline over FAI 74 in Rock Island County, Illinois. It was built in 1970, so it is 55 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 9,000 vehicles a day, roughly 3% of them trucks, projected to reach 9,090 by 2046. The structure is 227 ft (69.2 m) long and 118 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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Carries23rd Ave-Moline
CrossesFAI 74
Location1.5 MI S Ill 92
CountyRock Island County
StateIllinois
Coordinates41.49077, -90.50419
Functional classUrban Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length227 ft (69.2 m)
Longest span80 ft (24.4 m)
Deck width118 ft (36 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic9,000 (2020)
Projected traffic9,090 by 2046
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

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 23rd Ave-Moline over FAI 74 built?

It was built in 1970, making it 55 years old in 2025.

What condition is 23rd Ave-Moline over FAI 74 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 December 2023.

How much traffic does 23rd Ave-Moline over FAI 74 carry?

About 9,000 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is 23rd Ave-Moline over FAI 74?

The structure is 227 ft (69.2 m) long with a longest span of 80 ft (24.4 m) and a deck 118 ft wide.

Who owns 23rd Ave-Moline over FAI 74?

It is owned by the State Highway Agency.