US Bridges

I-280 WB over EB I-80

Fair

Scott County, Iowa · At Jct. I-280 · Structure no. 000000000047740

Built
1960
65 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
262 ft
3 main spans
Daily traffic
4,990
2022 count
Owner
State
State Highway Agency

About this bridge

I-280 WB over EB I-80 is a steel stringer/multi-beam or girder carrying I-280 WB over EB I-80 in Scott County, Iowa. It was built in 1960, so it is 65 years old, older than the Iowa average of 45.5 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 4,990 vehicles a day, roughly 48% of them trucks, projected to reach 4,990 by 2044. The structure is 262 ft (79.9 m) long and 36 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesI-280 WB
CrossesEB I-80
LocationAt Jct. I-280
RouteInterstate 280
CountyScott County
StateIowa
Coordinates41.60262, -90.67789
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating68 US tons
Inventory rating40.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length262 ft (79.9 m)
Longest span89 ft (27.1 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,990 (2022)
Projected traffic4,990 by 2044
Trucks48%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed13 mi (21 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-280 WB over EB I-80 built?

It was built in 1960, making it 65 years old in 2025.

What condition is I-280 WB over EB I-80 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 October 2024.

How much traffic does I-280 WB over EB I-80 carry?

About 4,990 vehicles per day (2022 count), of which roughly 48% are trucks.

How long is I-280 WB over EB I-80?

The structure is 262 ft (79.9 m) long with a longest span of 89 ft (27.1 m) and a deck 36 ft wide.

Who owns I-280 WB over EB I-80?

It is owned by the State Highway Agency.