US Bridges

NW 150th Ave over Turkey Creek Tributary

Poor

Polk County, Iowa · 081251401 · Structure no. 000000000283151

Built
1980
45 years old
Condition
Poor
inspected March 2023
Type
Culvert
Steel
Length
28 ft
3 main spans
Daily traffic
51
2022 count
Owner
County
County Highway Agency

About this bridge

NW 150th Ave over Turkey Creek Tributary is a steel culvert carrying NW 150th Ave over Turkey Creek Tributary in Polk County, Iowa. It was built in 1980, so it is 45 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 51 vehicles a day, projected to reach 51 by 2042. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNW 150th Ave
CrossesTurkey Creek Tributary
Location081251401
RouteCounty Highway 0
CountyPolk County
StateIowa
Coordinates41.83488, -93.72273
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadH 20
Structure length28 ft (8.5 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2022)
Projected traffic51 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NW 150th Ave over Turkey Creek Tributary built?

It was built in 1980, making it 45 years old in 2025.

What condition is NW 150th Ave over Turkey Creek Tributary in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does NW 150th Ave over Turkey Creek Tributary carry?

About 51 vehicles per day (2022 count).

How long is NW 150th Ave over Turkey Creek Tributary?

The structure is 28 ft (8.5 m) long with a longest span of 7 ft (2.1 m).

Who owns NW 150th Ave over Turkey Creek Tributary?

It is owned by the County Highway Agency.