US Bridges

Ia 140 over W Fk Little Sioux River

Fair

Plymouth County, Iowa · 1.5 Mi. N of Jct. SR C66 · Structure no. 000000000270630

Built
1964
61 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
178 ft
3 main spans
Daily traffic
1,390
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 140 over W Fk Little Sioux River is a steel continuous stringer/multi-beam or girder carrying Ia 140 over W Fk Little Sioux River in Plymouth County, Iowa. It was built in 1964, so it is 61 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 1,390 vehicles a day, roughly 13% of them trucks, projected to reach 1,390 by 2043. The structure is 178 ft (54.3 m) long and 30 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIa 140
CrossesW Fk Little Sioux River
Location1.5 Mi. N of Jct. SR C66
RouteState Highway 140
CountyPlymouth County
StateIowa
Coordinates42.61195, -95.95725
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length178 ft (54.3 m)
Longest span68 ft (20.7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,390 (2022)
Projected traffic1,390 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 140 over W Fk Little Sioux River built?

It was built in 1964, making it 61 years old in 2025.

What condition is Ia 140 over W Fk Little Sioux River 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 2023.

How much traffic does Ia 140 over W Fk Little Sioux River carry?

About 1,390 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Ia 140 over W Fk Little Sioux River?

The structure is 178 ft (54.3 m) long with a longest span of 68 ft (20.7 m) and a deck 30 ft wide.

Who owns Ia 140 over W Fk Little Sioux River?

It is owned by the State Highway Agency.