US Bridges

Local over Mosquito Creek

Fair

Guthrie County, Iowa · 081302801 · Structure no. 000000000169811

Built
1983
42 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
29
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Mosquito Creek is a concrete continuous slab carrying Local over Mosquito Creek in Guthrie County, Iowa. It was built in 1983, so it is 42 years old, younger 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 29 vehicles a day, projected to reach 29 by 2043. The structure is 128 ft (39 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesLocal
CrossesMosquito Creek
Location081302801
RouteCounty Highway 0
CountyGuthrie County
StateIowa
Coordinates41.80572, -94.34557
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.4 US tons
Inventory rating33.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length128 ft (39 m)
Longest span49 ft (14.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2022)
Projected traffic29 by 2043
Trucks0%
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$30,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Mosquito Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Local over Mosquito Creek 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 November 2023.

How much traffic does Local over Mosquito Creek carry?

About 29 vehicles per day (2022 count).

How long is Local over Mosquito Creek?

The structure is 128 ft (39 m) long with a longest span of 49 ft (14.9 m) and a deck 30 ft wide.

Who owns Local over Mosquito Creek?

It is owned by the County Highway Agency.