US Bridges

Ia 15 over Beaver Creek

Fair

Pocahontas County, Iowa · 2.9 Mi. S of SR C15 · Structure no. 000000000040320

Built
1957
68 years old, rebuilt 2010
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
113 ft
3 main spans
Daily traffic
250
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 15 over Beaver Creek is a prestressed concrete stringer/multi-beam or girder carrying Ia 15 over Beaver Creek in Pocahontas County, Iowa. It was built in 1957 and reconstructed in 2010, 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 250 vehicles a day, roughly 40% of them trucks, projected to reach 250 by 2043. The structure is 113 ft (34.4 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIa 15
CrossesBeaver Creek
Location2.9 Mi. S of SR C15
RouteState Highway 15
CountyPocahontas County
StateIowa
Coordinates42.84715, -94.52127
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.5 US tons
Inventory rating24.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length113 ft (34.4 m)
Longest span50 ft (15.2 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2022)
Projected traffic250 by 2043
Trucks40%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 15 over Beaver Creek built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2010.

What condition is Ia 15 over Beaver 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 September 2023.

How much traffic does Ia 15 over Beaver Creek carry?

About 250 vehicles per day (2022 count), of which roughly 40% are trucks.

How long is Ia 15 over Beaver Creek?

The structure is 113 ft (34.4 m) long with a longest span of 50 ft (15.2 m) and a deck 33 ft wide.

Who owns Ia 15 over Beaver Creek?

It is owned by the State Highway Agency.