US Bridges

Lark over West Fork Beaver Dam CR

Good

Cerro Gordo County, Iowa · 094211302 · Structure no. 000000000105431

Built
1978
47 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
39 ft
3 main spans
Daily traffic
275
2022 count
Owner
County
County Highway Agency

About this bridge

Lark over West Fork Beaver Dam CR is a concrete culvert carrying Lark over West Fork Beaver Dam CR in Cerro Gordo County, Iowa. It was built in 1978, so it is 47 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 275 vehicles a day, projected to reach 275 by 2044. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLark
CrossesWest Fork Beaver Dam CR
Location094211302
RouteCounty Highway 0
CountyCerro Gordo County
StateIowa
Coordinates42.96478, -93.28099
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.6 US tons
Inventory rating26.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic275 (2022)
Projected traffic275 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Lark over West Fork Beaver Dam CR built?

It was built in 1978, making it 47 years old in 2025.

What condition is Lark over West Fork Beaver Dam CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does Lark over West Fork Beaver Dam CR carry?

About 275 vehicles per day (2022 count).

How long is Lark over West Fork Beaver Dam CR?

The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Lark over West Fork Beaver Dam CR?

It is owned by the County Highway Agency.