US Bridges

Ia 3 over Mink Creek

Fair

Plymouth County, Iowa · 0.4 MI W of SR K42 · Structure no. 000000000039830

Built
1954
71 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
1,420
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 3 over Mink Creek is a concrete continuous slab carrying Ia 3 over Mink Creek in Plymouth County, Iowa. It was built in 1954, so it is 71 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 1,420 vehicles a day, roughly 28% of them trucks, projected to reach 1,420 by 2044. The structure is 128 ft (39 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesIa 3
CrossesMink Creek
Location0.4 MI W of SR K42
RouteState Highway 3
CountyPlymouth County
StateIowa
Coordinates42.79323, -96.28048
Functional classRural Minor 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length128 ft (39 m)
Longest span48 ft (14.6 m)
Deck width33 ft (10 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,420 (2022)
Projected traffic1,420 by 2044
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

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 Ia 3 over Mink Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Ia 3 over Mink 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 February 2024.

How much traffic does Ia 3 over Mink Creek carry?

About 1,420 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is Ia 3 over Mink Creek?

The structure is 128 ft (39 m) long with a longest span of 48 ft (14.6 m) and a deck 33 ft wide.

Who owns Ia 3 over Mink Creek?

It is owned by the State Highway Agency.