US Bridges

N 8th Street over Indian Creek

Fair

Pottawattamie County, Iowa · 8th ST over Indian Creek · Structure no. 000000000504145

Built
1988
37 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
3,786
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N 8th Street over Indian Creek is a prestressed concrete tee beam carrying N 8th Street over Indian Creek in Pottawattamie County, Iowa. It was built in 1988, so it is 37 years old, younger 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 3,786 vehicles a day, roughly 7% of them trucks, projected to reach 3,786 by 2044. The structure is 40 ft (12.2 m) long and 65 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN 8th Street
CrossesIndian Creek
Location8th ST over Indian Creek
RouteCity Street 0
StateIowa
Coordinates41.2622, -95.85604
Functional classUrban Minor Arterial

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width65 ft (19.8 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,786 (2022)
Projected traffic3,786 by 2044
Trucks7%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 N 8th Street over Indian Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is N 8th Street over Indian 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 June 2024.

How much traffic does N 8th Street over Indian Creek carry?

About 3,786 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is N 8th Street over Indian Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 65 ft wide.

Who owns N 8th Street over Indian Creek?

It is owned by the City or Municipal Highway Agency.