US Bridges

NE 126th Ave over Old Skunk River Tributar

Fair

Polk County, Iowa · 081223201 · Structure no. 000000000282620

Built
1969
56 years old
Condition
Fair
inspected April 2024
Type
Channel Beam
Concrete
Length
37 ft
1 main span
Daily traffic
61
2023 count
Owner
County
County Highway Agency

About this bridge

NE 126th Ave over Old Skunk River Tributar is a concrete channel beam carrying NE 126th Ave over Old Skunk River Tributar in Polk County, Iowa. It was built in 1969, so it is 56 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 61 vehicles a day, roughly 15% of them trucks, projected to reach 61 by 2043. The structure is 37 ft (11.3 m) long and 29 ft wide. If it were closed, the detour would be 123 mi (198 km).

CarriesNE 126th Ave
CrossesOld Skunk River Tributar
Location081223201
RouteCounty Highway 0
StateIowa
Coordinates41.79111, -93.43915
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.9 US tons
Inventory rating21.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span35 ft (10.7 m)
Deck width29 ft (8.8 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61 (2023)
Projected traffic61 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123 mi (198 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty 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 Old Skunk River Tributar built?

It was built in 1969, making it 56 years old in 2025.

What condition is NE 126th Ave over Old Skunk River Tributar 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 April 2024.

How much traffic does NE 126th Ave over Old Skunk River Tributar carry?

About 61 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is NE 126th Ave over Old Skunk River Tributar?

The structure is 37 ft (11.3 m) long with a longest span of 35 ft (10.7 m) and a deck 29 ft wide.

Who owns NE 126th Ave over Old Skunk River Tributar?

It is owned by the County Highway Agency.