US Bridges

Aurora Ave over N Walnut Creek

Fair

Polk County, Iowa · O38090555 · Structure no. 000000000504140

Built
1991
34 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
75 ft
4 main spans
Daily traffic
1,821
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Aurora Ave over N Walnut Creek is a concrete continuous culvert carrying Aurora Ave over N Walnut Creek in Polk County, Iowa. It was built in 1991, so it is 34 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 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 1,821 vehicles a day, projected to reach 1,821 by 2044. The structure is 75 ft (22.9 m) long.

Location

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CarriesAurora Ave
CrossesN Walnut Creek
LocationO38090555
RouteCity Street 0
CountyPolk County
StateIowa
Coordinates41.63718, -93.74613
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.3 US tons
Inventory rating24.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,821 (2022)
Projected traffic1,821 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Aurora Ave over N Walnut Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Aurora Ave over N Walnut 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 Aurora Ave over N Walnut Creek carry?

About 1,821 vehicles per day (2022 count).

How long is Aurora Ave over N Walnut Creek?

The structure is 75 ft (22.9 m) long with a longest span of 15 ft (4.6 m).

Who owns Aurora Ave over N Walnut Creek?

It is owned by the City or Municipal Highway Agency.