US Bridges

NE 126th Ave over Four Mile Creek

Good

Polk County, Iowa · 081243601 · Structure no. 000000000040780

Built
1972
53 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
91 ft
3 main spans
Daily traffic
2,659
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

NE 126th Ave over Four Mile Creek is a concrete continuous slab carrying NE 126th Ave over Four Mile Creek in Polk County, Iowa. It was built in 1972, so it is 53 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 2,659 vehicles a day, projected to reach 2,659 by 2043. The structure is 91 ft (27.7 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesNE 126th Ave
CrossesFour Mile Creek
Location081243601
RouteCity Street 0
CountyPolk County
StateIowa
Coordinates41.79128, -93.59913
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42.1 US tons
Inventory rating32.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length91 ft (27.7 m)
Longest span34 ft (10.4 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,659 (2023)
Projected traffic2,659 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NE 126th Ave over Four Mile Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is NE 126th Ave over Four Mile Creek 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 March 2023.

How much traffic does NE 126th Ave over Four Mile Creek carry?

About 2,659 vehicles per day (2023 count).

How long is NE 126th Ave over Four Mile Creek?

The structure is 91 ft (27.7 m) long with a longest span of 34 ft (10.4 m) and a deck 33 ft wide.

Who owns NE 126th Ave over Four Mile Creek?

It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.