US Bridges

Ia 3 & 150 over Otter Creek

Fair

Fayette County, Iowa · 0.1 Mi. N of S JCT Ia 150 · Structure no. 000000000605705

Built
1986
39 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
43 ft
1 main span
Daily traffic
3,930
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 3 & 150 over Otter Creek is a concrete continuous slab carrying Ia 3 & 150 over Otter Creek in Fayette County, Iowa. It was built in 1986, so it is 39 years old, younger 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 3,930 vehicles a day, roughly 5% of them trucks, projected to reach 3,930 by 2042. The structure is 43 ft (13.2 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIa 3 & 150
CrossesOtter Creek
Location0.1 Mi. N of S JCT Ia 150
RouteState Highway 3
CountyFayette County
StateIowa
Coordinates42.68057, -91.91211
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating57.8 US tons
Inventory rating34.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length43 ft (13.2 m)
Longest span40 ft (12.2 m)
Deck width76 ft (23.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,930 (2022)
Projected traffic3,930 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 1986, making it 39 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 April 2023.

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

About 3,930 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Ia 3 & 150 over Otter Creek?

The structure is 43 ft (13.2 m) long with a longest span of 40 ft (12.2 m) and a deck 76 ft wide.

Who owns Ia 3 & 150 over Otter Creek?

It is owned by the State Highway Agency.