US Bridges

I 880 EB over Old Boyer River Channel

Fair

Pottawattamie County, Iowa · 0.5 Mi. E of E Jct. I-29 · Structure no. 000000000044290

Built
1966
59 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
63 ft
2 main spans
Daily traffic
670
2022 count
Owner
State
State Highway Agency

About this bridge

I 880 EB over Old Boyer River Channel is a concrete continuous slab carrying I 880 EB over Old Boyer River Channel 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 6 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 670 vehicles a day, roughly 17% of them trucks, projected to reach 670 by 2042. The structure is 63 ft (19.2 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 880 EB
CrossesOld Boyer River Channel
Location0.5 Mi. E of E Jct. I-29
RouteInterstate 880
StateIowa
Coordinates41.49456, -95.89534
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.5 US tons
Inventory rating45.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span31 ft (9.4 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic670 (2022)
Projected traffic670 by 2042
Trucks17%
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 Old Boyer River Channel built?

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

What condition is I 880 EB over Old Boyer River Channel 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 May 2023.

How much traffic does I 880 EB over Old Boyer River Channel carry?

About 670 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is I 880 EB over Old Boyer River Channel?

The structure is 63 ft (19.2 m) long with a longest span of 31 ft (9.4 m) and a deck 42 ft wide.

Who owns I 880 EB over Old Boyer River Channel?

It is owned by the State Highway Agency.