US Bridges

Ia 376 over Floyd River

Fair

Woodbury County, Iowa · 1.3 Mi. S of SR D12 · Structure no. 000000000053060

Built
1957
68 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
522 ft
5 main spans
Daily traffic
9,200
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 376 over Floyd River is a steel continuous stringer/multi-beam or girder carrying Ia 376 over Floyd River in Woodbury County, Iowa. It was built in 1957, so it is 68 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 9,200 vehicles a day, roughly 8% of them trucks, projected to reach 9,200 by 2043. The structure is 522 ft (159.1 m) long and 64 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIa 376
CrossesFloyd River
Location1.3 Mi. S of SR D12
RouteState Highway 376
CountyWoodbury County
StateIowa
Coordinates42.53208, -96.35943
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.
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 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 rating45.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5 (+2 approach)
Design loadHS 20
Structure length522 ft (159.1 m)
Longest span91 ft (27.7 m)
Deck width64 ft (19.5 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,200 (2022)
Projected traffic9,200 by 2043
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Ia 376 over Floyd River built?

It was built in 1957, making it 68 years old in 2025.

What condition is Ia 376 over Floyd 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 376 over Floyd River carry?

About 9,200 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Ia 376 over Floyd River?

The structure is 522 ft (159.1 m) long with a longest span of 91 ft (27.7 m) and a deck 64 ft wide.

Who owns Ia 376 over Floyd River?

It is owned by the State Highway Agency.