US Bridges

FAI 280 over Mississippi River

Fair

Rock Island County, Illinois · SW of Rock Island · Structure no. 081010600000000

Built
1970
55 years old, rebuilt 2022
Condition
Fair
inspected August 2024
Type
Arch - Thru
Steel
Length
4,193 ft
1 main span
Daily traffic
28,100
2019 count
Owner
State
State Highway Agency

About this bridge

FAI 280 over Mississippi River is a steel arch - thru carrying FAI 280 over Mississippi River in Rock Island County, Illinois. It was built in 1970 and reconstructed in 2022, 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 28,100 vehicles a day, roughly 27% of them trucks, projected to reach 28,381 by 2046. The structure is 4,193 ft (1,278 m) long and 84 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFAI 280
CrossesMississippi River
LocationSW of Rock Island
RouteInterstate 280
CountyRock Island County
StateIllinois
Coordinates41.47904, -90.63244
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+27 approach)
Design loadHS 20 + Mod
Structure length4,193 ft (1,278 m)
Longest span570 ft (173.7 m)
Deck width84 ft (25.6 m)
Roadway width77 ft (23.5 m)
Vertical clearance over deck19 ft (5.8 m)

Traffic and service

Average daily traffic28,100 (2019)
Projected traffic28,381 by 2046
Trucks27%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was FAI 280 over Mississippi River built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2022.

What condition is FAI 280 over Mississippi River 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 August 2024.

How much traffic does FAI 280 over Mississippi River carry?

About 28,100 vehicles per day (2019 count), of which roughly 27% are trucks.

How long is FAI 280 over Mississippi River?

The structure is 4,193 ft (1,278 m) long with a longest span of 570 ft (173.7 m) and a deck 84 ft wide.

Who owns FAI 280 over Mississippi River?

It is owned by the State Highway Agency.