US Bridges

I-80 over S-W Conn over EB I-880

Fair

Pottawattamie County, Iowa · At Jct. I-880 · Structure no. 000000000045390

Built
1966
59 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
143 ft
3 main spans
Daily traffic
470
2022 count
Owner
State
State Highway Agency

About this bridge

I-80 over S-W Conn over EB I-880 is a concrete continuous slab carrying I-80 over S-W Conn over EB I-880 in Pottawattamie County, Iowa. It was built in 1966, so it is 59 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 470 vehicles a day, roughly 23% of them trucks, projected to reach 470 by 2043. The structure is 143 ft (43.6 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesI-80
CrossesS-W Conn over EB I-880
LocationAt Jct. I-880
RouteInterstate 80
CountyPottawattamie County
StateIowa
Coordinates41.49658, -95.58438
Functional classRural 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
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 inspectionOctober 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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating74 US tons
Inventory rating44.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span50 ft (15.2 m)
Deck width26 ft (8 m)
Roadway width23 ft (7 m)
Vertical clearance over deck14 ft (4.4 m)

Traffic and service

Average daily traffic470 (2022)
Projected traffic470 by 2043
Trucks23%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed5 mi (8 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-80 over S-W Conn over EB I-880 built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-80 over S-W Conn over EB I-880 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 2023.

How much traffic does I-80 over S-W Conn over EB I-880 carry?

About 470 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is I-80 over S-W Conn over EB I-880?

The structure is 143 ft (43.6 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.

Who owns I-80 over S-W Conn over EB I-880?

It is owned by the State Highway Agency.