US Bridges

A46 150th ST over Turkey River

Good

Howard County, Iowa · 098122201 · Structure no. 000000000182251

Built
2017
8 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
41 ft
3 main spans
Daily traffic
717
2022 count
Owner
County
County Highway Agency

About this bridge

A46 150th ST over Turkey River is a concrete culvert carrying A46 150th ST over Turkey River in Howard County, Iowa. It was built in 2017, so it is 8 years old, younger 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 717 vehicles a day, roughly 30% of them trucks, projected to reach 717 by 2044. The structure is 41 ft (12.5 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesA46 150th ST
CrossesTurkey River
Location098122201
RouteCounty Highway 0
CountyHoward County
StateIowa
Coordinates43.29869, -92.24494
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length41 ft (12.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic717 (2022)
Projected traffic717 by 2044
Trucks30%
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

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 A46 150th ST over Turkey River built?

It was built in 2017, making it 8 years old in 2025.

What condition is A46 150th ST over Turkey River 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 2024.

How much traffic does A46 150th ST over Turkey River carry?

About 717 vehicles per day (2022 count), of which roughly 30% are trucks.

How long is A46 150th ST over Turkey River?

The structure is 41 ft (12.5 m) long with a longest span of 12 ft (3.7 m).

Who owns A46 150th ST over Turkey River?

It is owned by the County Highway Agency.