US Bridges

FM over Muchakinock Creek

Good

Mahaska County, Iowa · 075162709 · Structure no. 000000000236581

Built
2001
24 years old
Condition
Good
inspected December 2021
Type
Slab
Concrete Continuous
Length
143 ft
3 main spans
Daily traffic
620
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Muchakinock Creek is a concrete continuous slab carrying FM over Muchakinock Creek in Mahaska County, Iowa. It was built in 2001, so it is 24 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 620 vehicles a day, roughly 16% of them trucks, projected to reach 620 by 2043. The structure is 143 ft (43.6 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesMuchakinock Creek
Location075162709
RouteCity Street 0
StateIowa
Coordinates41.27278, -92.68702
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2021
Inspection intervalevery 48 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 rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span55 ft (16.8 m)
Deck width44 ft (13.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic620 (2022)
Projected traffic620 by 2043
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 over Muchakinock Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is FM over Muchakinock 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 December 2021.

How much traffic does FM over Muchakinock Creek carry?

About 620 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is FM over Muchakinock Creek?

The structure is 143 ft (43.6 m) long with a longest span of 55 ft (16.8 m) and a deck 44 ft wide.

Who owns FM over Muchakinock Creek?

It is owned by the County Highway Agency.