US Bridges

290th ST over I 880

Good

Pottawattamie County, Iowa · 1.4 Mi. W of Jct. Ia 191 · Structure no. 000000000044470

Built
1966
59 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
220 ft
4 main spans
Daily traffic
45
2022 count
Owner
State
State Highway Agency

About this bridge

290th ST over I 880 is a prestressed concrete stringer/multi-beam or girder carrying 290th ST over 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 45 vehicles a day, roughly 16% of them trucks, projected to reach 45 by 2042. The structure is 220 ft (67.1 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Carries290th ST
CrossesI 880
Location1.4 Mi. W of Jct. Ia 191
RouteCounty Highway 0
StateIowa
Coordinates41.49863, -95.62677
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.8 US tons
Inventory rating26.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length220 ft (67.1 m)
Longest span69 ft (21 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)
Projected traffic45 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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 290th ST over I 880 built?

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

What condition is 290th ST over I 880 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does 290th ST over I 880 carry?

About 45 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is 290th ST over I 880?

The structure is 220 ft (67.1 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.

Who owns 290th ST over I 880?

It is owned by the State Highway Agency.