US Bridges

Ia 3 over Stream

Good

Plymouth County, Iowa · 0.9 Mi. W of Jct. SR L12 · Structure no. 000000000039881

Built
1994
31 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
3,820
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 3 over Stream is a concrete continuous culvert carrying Ia 3 over Stream in Plymouth County, Iowa. It was built in 1994, so it is 31 years old, younger 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 3,820 vehicles a day, roughly 11% of them trucks, projected to reach 3,820 by 2044. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesIa 3
CrossesStream
Location0.9 Mi. W of Jct. SR L12
RouteState Highway 3
CountyPlymouth County
StateIowa
Coordinates42.80837, -95.99685
Functional classRural Principal Arterial - Other

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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.6 US tons
Inventory rating25.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.5 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 traffic3,820 (2022)
Projected traffic3,820 by 2044
Trucks11%
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 3 over Stream built?

It was built in 1994, making it 31 years old in 2025.

What condition is Ia 3 over Stream 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 February 2024.

How much traffic does Ia 3 over Stream carry?

About 3,820 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Ia 3 over Stream?

The structure is 28 ft (8.5 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 3 over Stream?

It is owned by the State Highway Agency.