US Bridges

150th over Beaver Dam Creek

Poor

Cerro Gordo County, Iowa · 094211201 · Structure no. 000000000105420

Built
1961
64 years old
Condition
Poor
inspected March 2024
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
687
2022 count
Owner
County
County Highway Agency

About this bridge

150th over Beaver Dam Creek is a concrete continuous slab carrying 150th over Beaver Dam Creek in Cerro Gordo County, Iowa. It was built in 1961, so it is 64 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 4 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.

It carries about 687 vehicles a day, roughly 22% of them trucks, projected to reach 687 by 2044. The structure is 100 ft (30.5 m) long and 30 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
Carries150th
CrossesBeaver Dam Creek
Location094211201
RouteCounty Highway 0
CountyCerro Gordo County
StateIowa
Coordinates42.98009, -93.27656
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.5 US tons
Inventory rating45.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length100 ft (30.5 m)
Longest span39 ft (11.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic687 (2022)
Projected traffic687 by 2044
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 150th over Beaver Dam Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is 150th over Beaver Dam 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 March 2024.

How much traffic does 150th over Beaver Dam Creek carry?

About 687 vehicles per day (2022 count), of which roughly 22% are trucks.

How long is 150th over Beaver Dam Creek?

The structure is 100 ft (30.5 m) long with a longest span of 39 ft (11.9 m) and a deck 30 ft wide.

Who owns 150th over Beaver Dam Creek?

It is owned by the County Highway Agency.