US Bridges

B-15 over Beaver Creek

Fair

Cerro Gordo County, Iowa · 000000000 · Structure no. 000000000019150

Built
1957
68 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
130 ft
3 main spans
Daily traffic
579
2022 count
Owner
County
County Highway Agency

About this bridge

B-15 over Beaver Creek is a concrete continuous slab carrying B-15 over Beaver Creek in Cerro Gordo 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 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 579 vehicles a day, roughly 12% of them trucks, projected to reach 579 by 2044. The structure is 130 ft (39.6 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesB-15
CrossesBeaver Creek
Location000000000
RouteCity Street 0
CountyCerro Gordo County
StateIowa
Coordinates43.24275, -93.12459
Functional classRural Minor Collector

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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating61.4 US tons
Inventory rating26.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length130 ft (39.6 m)
Longest span46 ft (14 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic579 (2022)
Projected traffic579 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was B-15 over Beaver Creek built?

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

What condition is B-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 January 2024.

How much traffic does B-15 over Beaver Creek carry?

About 579 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is B-15 over Beaver Creek?

The structure is 130 ft (39.6 m) long with a longest span of 46 ft (14 m) and a deck 34 ft wide.

Who owns B-15 over Beaver Creek?

It is owned by the County Highway Agency.