US Bridges

Ia 10 over Dry Creek

Fair

Sioux County, Iowa · 0.4 MI W of Ia 12 · Structure no. 000000000048470

Built
1955
70 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
127 ft
3 main spans
Daily traffic
2,800
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 10 over Dry Creek is a concrete continuous slab carrying Ia 10 over Dry Creek in Sioux County, Iowa. It was built in 1955, so it is 70 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 2,800 vehicles a day, roughly 16% of them trucks, projected to reach 2,800 by 2044. The structure is 127 ft (38.7 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIa 10
CrossesDry Creek
Location0.4 MI W of Ia 12
RouteState Highway 10
CountySioux County
StateIowa
Coordinates43.00239, -96.48796
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length127 ft (38.7 m)
Longest span48 ft (14.6 m)
Deck width38 ft (11.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2022)
Projected traffic2,800 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 10 over Dry Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is Ia 10 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 June 2024.

How much traffic does Ia 10 over Dry Creek carry?

About 2,800 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is Ia 10 over Dry Creek?

The structure is 127 ft (38.7 m) long with a longest span of 48 ft (14.6 m) and a deck 38 ft wide.

Who owns Ia 10 over Dry Creek?

It is owned by the State Highway Agency.