US Bridges

Ia 150 over Unnamed Creek

Fair

Fayette County, Iowa · 1.1 Mi. S of Jct. Ia 56 · Structure no. 000000000024770

Built
1928
97 years old, rebuilt 1969
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
3,290
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 150 over Unnamed Creek is a concrete continuous culvert carrying Ia 150 over Unnamed Creek in Fayette County, Iowa. It was built in 1928 and reconstructed in 1969, so it is 97 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 3,290 vehicles a day, roughly 12% of them trucks, projected to reach 3,290 by 2044. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesIa 150
CrossesUnnamed Creek
Location1.1 Mi. S of Jct. Ia 56
RouteState Highway 150
CountyFayette County
StateIowa
Coordinates42.93376, -91.81423
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.6 US tons
Inventory rating18.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,290 (2022)
Projected traffic3,290 by 2044
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 150 over Unnamed Creek built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1969.

What condition is Ia 150 over Unnamed 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 April 2024.

How much traffic does Ia 150 over Unnamed Creek carry?

About 3,290 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Ia 150 over Unnamed Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Ia 150 over Unnamed Creek?

It is owned by the State Highway Agency.