US Bridges

FM 150th ST over Little Wapsipinicon

Fair

Howard County, Iowa · 098142203 · Structure no. 000000000182680

Built
1967
58 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
77 ft
3 main spans
Daily traffic
452
2022 count
Owner
County
County Highway Agency

About this bridge

FM 150th ST over Little Wapsipinicon is a concrete continuous slab carrying FM 150th ST over Little Wapsipinicon in Howard County, Iowa. It was built in 1967, so it is 58 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 452 vehicles a day, roughly 22% of them trucks, projected to reach 452 by 2043. The structure is 77 ft (23.5 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFM 150th ST
CrossesLittle Wapsipinicon
Location098142203
RouteCounty Highway 0
CountyHoward County
StateIowa
Coordinates43.29887, -92.47757
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.9 US tons
Inventory rating29.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length77 ft (23.5 m)
Longest span29 ft (8.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic452 (2022)
Projected traffic452 by 2043
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 150th ST over Little Wapsipinicon built?

It was built in 1967, making it 58 years old in 2025.

What condition is FM 150th ST over Little Wapsipinicon 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 2023.

How much traffic does FM 150th ST over Little Wapsipinicon carry?

About 452 vehicles per day (2022 count), of which roughly 22% are trucks.

How long is FM 150th ST over Little Wapsipinicon?

The structure is 77 ft (23.5 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.

Who owns FM 150th ST over Little Wapsipinicon?

It is owned by the County Highway Agency.