US Bridges

150th ST over Little Mosquito Creek

Good

Muscatine County, Iowa · 078013101 · Structure no. 000000000258062

Built
2023
2 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete Continuous
Length
33 ft
3 main spans
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

150th ST over Little Mosquito Creek is a concrete continuous culvert carrying 150th ST over Little Mosquito Creek in Muscatine County, Iowa. It was built in 2023, so it is 2 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 30 vehicles a day, projected to reach 30 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Carries150th ST
CrossesLittle Mosquito Creek
Location078013101
RouteCounty Highway 0
StateIowa
Coordinates41.52242, -91.00559
Functional classRural Local

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 protection7 GoodSome minor problems.
Culvert9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHL 93
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic30 by 2043
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 150th ST over Little Mosquito Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is 150th ST over Little Mosquito 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 September 2023.

How much traffic does 150th ST over Little Mosquito Creek carry?

About 30 vehicles per day (2022 count).

How long is 150th ST over Little Mosquito Creek?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).

Who owns 150th ST over Little Mosquito Creek?

It is owned by the County Highway Agency.