US Bridges

Ia 149 over Stream

Good

Iowa County, Iowa · 0.7 Mi. N of Jct. SR F52 · Structure no. 000000000029461

Built
1985
40 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
1,910
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 149 over Stream is a concrete continuous culvert carrying Ia 149 over Stream in Iowa County, Iowa. It was built in 1985, so it is 40 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 1,910 vehicles a day, roughly 11% of them trucks, projected to reach 1,910 by 2043. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesIa 149
CrossesStream
Location0.7 Mi. N of Jct. SR F52
RouteState Highway 149
CountyIowa County
StateIowa
Coordinates41.59691, -92.0041
Functional classRural Minor Arterial

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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.1 US tons
Inventory rating74 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.8 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 traffic1,910 (2022)
Projected traffic1,910 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 149 over Stream built?

It was built in 1985, making it 40 years old in 2025.

What condition is Ia 149 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 December 2023.

How much traffic does Ia 149 over Stream carry?

About 1,910 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Ia 149 over Stream?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns Ia 149 over Stream?

It is owned by the State Highway Agency.