US Bridges

Local over Muchakinock Creek

Fair

Mahaska County, Iowa · 074161305 · Structure no. 000000000235781

Built
1987
38 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
174 ft
4 main spans
Daily traffic
710
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Muchakinock Creek is a concrete continuous slab carrying Local over Muchakinock Creek in Mahaska County, Iowa. It was built in 1987, so it is 38 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 5 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 710 vehicles a day, roughly 30% of them trucks, projected to reach 710 by 2044. The structure is 174 ft (53 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesLocal
CrossesMuchakinock Creek
Location074161305
RouteCounty Highway 0
CountyMahaska County
StateIowa
Coordinates41.20619, -92.65075
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.6 US tons
Inventory rating32.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length174 ft (53 m)
Longest span49 ft (14.9 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic710 (2022)
Projected traffic710 by 2044
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Local over Muchakinock Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Local over Muchakinock 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 December 2024.

How much traffic does Local over Muchakinock Creek carry?

About 710 vehicles per day (2022 count), of which roughly 30% are trucks.

How long is Local over Muchakinock Creek?

The structure is 174 ft (53 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.

Who owns Local over Muchakinock Creek?

It is owned by the County Highway Agency.