US Bridges

FM RD F32 over Mosquito Creek

Fair

Shelby County, Iowa · 802640 · Structure no. 000000000306801

Built
1974
51 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
192 ft
3 main spans
Daily traffic
816
2022 count
Owner
County
County Highway Agency

About this bridge

FM RD F32 over Mosquito Creek is a prestressed concrete stringer/multi-beam or girder carrying FM RD F32 over Mosquito Creek in Shelby County, Iowa. It was built in 1974, so it is 51 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 816 vehicles a day, roughly 14% of them trucks, projected to reach 816 by 2044. The structure is 192 ft (58.5 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM RD F32
CrossesMosquito Creek
Location802640
RouteCounty Highway 0
StateIowa
Coordinates41.71827, -95.46874
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.9 US tons
Inventory rating36.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length192 ft (58.5 m)
Longest span69 ft (21 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic816 (2022)
Projected traffic816 by 2044
Trucks14%
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 FM RD F32 over Mosquito Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is FM RD F32 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 April 2024.

How much traffic does FM RD F32 over Mosquito Creek carry?

About 816 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is FM RD F32 over Mosquito Creek?

The structure is 192 ft (58.5 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.

Who owns FM RD F32 over Mosquito Creek?

It is owned by the County Highway Agency.