US Bridges

Co. Rd. D-35 over Beaver Creek

PoorPosted for load

Hardin County, Iowa · 088203301 · Structure no. 000000000503775

Built
1960
65 years old
Condition
Poor
inspected February 2023
Type
Slab
Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
250
2022 count
Owner
County
County Highway Agency

About this bridge

Co. Rd. D-35 over Beaver Creek is a concrete continuous slab carrying Co. Rd. D-35 over Beaver Creek in Hardin County, Iowa. It was built in 1960, so it is 65 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 250 vehicles a day, roughly 12% of them trucks, projected to reach 250 by 2043. The structure is 103 ft (31.4 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCo. Rd. D-35
CrossesBeaver Creek
Location088203301
RouteCity Street 0
StateIowa
Coordinates42.43368, -93.19816
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36.5 US tons
Inventory rating21.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length103 ft (31.4 m)
Longest span39 ft (11.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2022)
Projected traffic250 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Co. Rd. D-35 over Beaver Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Co. Rd. D-35 over Beaver Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2023.

How much traffic does Co. Rd. D-35 over Beaver Creek carry?

About 250 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Co. Rd. D-35 over Beaver Creek?

The structure is 103 ft (31.4 m) long with a longest span of 39 ft (11.9 m) and a deck 26 ft wide.

Who owns Co. Rd. D-35 over Beaver Creek?

It is owned by the County Highway Agency.