US Bridges

I 880 EB over Mosquito Creek

Fair

Pottawattamie County, Iowa · 0.5 Mi. E of Jct. Ia 191 · Structure no. 000000000044520

Built
1966
59 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
263 ft
3 main spans
Daily traffic
2,900
2022 count
Owner
State
State Highway Agency

About this bridge

I 880 EB over Mosquito Creek is a steel continuous stringer/multi-beam or girder carrying I 880 EB over Mosquito Creek 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 2,900 vehicles a day, roughly 37% of them trucks, projected to reach 2,900 by 2043. The structure is 263 ft (80.2 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 880 EB
CrossesMosquito Creek
Location0.5 Mi. E of Jct. Ia 191
RouteInterstate 880
CountyPottawattamie County
StateIowa
Coordinates41.49865, -95.59117
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length263 ft (80.2 m)
Longest span102 ft (31.1 m)
Deck width42 ft (12.9 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2022)
Projected traffic2,900 by 2043
Trucks37%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 880 EB over Mosquito Creek built?

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

What condition is I 880 EB over Mosquito Creek 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 July 2023.

How much traffic does I 880 EB over Mosquito Creek carry?

About 2,900 vehicles per day (2022 count), of which roughly 37% are trucks.

How long is I 880 EB over Mosquito Creek?

The structure is 263 ft (80.2 m) long with a longest span of 102 ft (31.1 m) and a deck 42 ft wide.

Who owns I 880 EB over Mosquito Creek?

It is owned by the State Highway Agency.