US Bridges

SB Ia 376 over Dry Creek

Fair

Woodbury County, Iowa · 0.1 MI N of SR D12 · Structure no. 000000000053100

Built
1956
69 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
3,750
2022 count
Owner
State
State Highway Agency

About this bridge

SB Ia 376 over Dry Creek is a concrete slab carrying SB Ia 376 over Dry Creek in Woodbury County, Iowa. It was built in 1956, so it is 69 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 3,750 vehicles a day, roughly 8% of them trucks, projected to reach 3,750 by 2043. The structure is 28 ft (8.5 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSB Ia 376
CrossesDry Creek
Location0.1 MI N of SR D12
RouteState Highway 376
CountyWoodbury County
StateIowa
Coordinates42.55002, -96.34734
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
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 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 rating56.2 US tons
Inventory rating33.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length28 ft (8.5 m)
Longest span24 ft (7.3 m)
Deck width35 ft (10.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,750 (2022)
Projected traffic3,750 by 2043
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 SB Ia 376 over Dry Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is SB Ia 376 over Dry 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 December 2023.

How much traffic does SB Ia 376 over Dry Creek carry?

About 3,750 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is SB Ia 376 over Dry Creek?

The structure is 28 ft (8.5 m) long with a longest span of 24 ft (7.3 m) and a deck 35 ft wide.

Who owns SB Ia 376 over Dry Creek?

It is owned by the State Highway Agency.