US Bridges

Ia 141 over W Branch Little Sioux

Fair

Woodbury County, Iowa · 0.8 MI E of SR K64 · Structure no. 000000000053270

Built
1959
66 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
215 ft
3 main spans
Daily traffic
1,470
2023 count
Owner
State
State Highway Agency

About this bridge

Ia 141 over W Branch Little Sioux is a prestressed concrete stringer/multi-beam or girder carrying Ia 141 over W Branch Little Sioux in Woodbury County, Iowa. It was built in 1959, so it is 66 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 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 1,470 vehicles a day, roughly 17% of them trucks, projected to reach 1,470 by 2043. The structure is 215 ft (65.5 m) long and 36 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesIa 141
CrossesW Branch Little Sioux
Location0.8 MI E of SR K64
RouteState Highway 141
CountyWoodbury County
StateIowa
Coordinates42.22696, -96.07853
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.8 US tons
Inventory rating21.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length215 ft (65.5 m)
Longest span71 ft (21.6 m)
Deck width36 ft (11.1 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,470 (2023)
Projected traffic1,470 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 141 over W Branch Little Sioux built?

It was built in 1959, making it 66 years old in 2025.

What condition is Ia 141 over W Branch Little Sioux 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 July 2024.

How much traffic does Ia 141 over W Branch Little Sioux carry?

About 1,470 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Ia 141 over W Branch Little Sioux?

The structure is 215 ft (65.5 m) long with a longest span of 71 ft (21.6 m) and a deck 36 ft wide.

Who owns Ia 141 over W Branch Little Sioux?

It is owned by the State Highway Agency.