US Bridges

US 63 over Little Muchakinock Creek

Fair

Mahaska County, Iowa · 0.2 Miles North of Ia 163 · Structure no. 000000000035090

Built
1963
62 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
127 ft
3 main spans
Daily traffic
6,600
2022 count
Owner
State
State Highway Agency

About this bridge

US 63 over Little Muchakinock Creek is a concrete continuous slab carrying US 63 over Little Muchakinock Creek in Mahaska County, Iowa. It was built in 1963, so it is 62 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 6,600 vehicles a day, roughly 9% of them trucks, projected to reach 6,600 by 2042. The structure is 127 ft (38.7 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUS 63
CrossesLittle Muchakinock Creek
Location0.2 Miles North of Ia 163
RouteU.S. Route 63
CountyMahaska County
StateIowa
Coordinates41.26613, -92.64266
Functional classUrban Other Principal Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length127 ft (38.7 m)
Longest span49 ft (14.9 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,600 (2022)
Projected traffic6,600 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 63 over Little Muchakinock Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is US 63 over Little 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 March 2024.

How much traffic does US 63 over Little Muchakinock Creek carry?

About 6,600 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is US 63 over Little Muchakinock Creek?

The structure is 127 ft (38.7 m) long with a longest span of 49 ft (14.9 m) and a deck 36 ft wide.

Who owns US 63 over Little Muchakinock Creek?

It is owned by the State Highway Agency.