US Bridges

Ia 148 over Stream

Fair

Adams County, Iowa · 2.2 Mi. S of Jct. U.S. 34 · Structure no. 000000000013380

Built
1961
64 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete Continuous
Length
50 ft
3 main spans
Daily traffic
1,200
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 148 over Stream is a concrete continuous culvert carrying Ia 148 over Stream in Adams 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 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 1,200 vehicles a day, roughly 19% of them trucks, projected to reach 1,200 by 2044. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesIa 148
CrossesStream
Location2.2 Mi. S of Jct. U.S. 34
RouteState Highway 148
CountyAdams County
StateIowa
Coordinates40.94832, -94.73833
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 rating48 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2022)
Projected traffic1,200 by 2044
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

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 148 over Stream built?

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

What condition is Ia 148 over Stream 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 July 2024.

How much traffic does Ia 148 over Stream carry?

About 1,200 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is Ia 148 over Stream?

The structure is 50 ft (15.2 m) long with a longest span of 18 ft (5.5 m).

Who owns Ia 148 over Stream?

It is owned by the State Highway Agency.