US Bridges

Ia 3 & 150 over Otter Creek

Fair

Fayette County, Iowa · 1.2 Mi. E of N JCT Ia 150 · Structure no. 000000000024470

Built
1955
70 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
2,580
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 3 & 150 over Otter Creek is a concrete continuous culvert carrying Ia 3 & 150 over Otter Creek in Fayette County, Iowa. It was built in 1955, so it is 70 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 2,580 vehicles a day, roughly 8% of them trucks, projected to reach 2,580 by 2044. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIa 3 & 150
CrossesOtter Creek
Location1.2 Mi. E of N JCT Ia 150
RouteState Highway 3
CountyFayette County
StateIowa
Coordinates42.69789, -91.91321
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 inspectionFebruary 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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating20.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 20
Structure length38 ft (11.6 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 traffic2,580 (2022)
Projected traffic2,580 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 3 & 150 over Otter Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is Ia 3 & 150 over Otter 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 February 2024.

How much traffic does Ia 3 & 150 over Otter Creek carry?

About 2,580 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Ia 3 & 150 over Otter Creek?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 3 & 150 over Otter Creek?

It is owned by the State Highway Agency.