US Bridges

Ia 76 over Stream

Fair

Allamakee County, Iowa · 2.5 Mi. S of Jct. SR A26 · Structure no. 000000000013630

Built
1955
70 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
980
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 76 over Stream is a concrete continuous culvert carrying Ia 76 over Stream in Allamakee 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 980 vehicles a day, roughly 27% of them trucks, projected to reach 980 by 2044. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesIa 76
CrossesStream
Location2.5 Mi. S of Jct. SR A26
RouteState Highway 76
CountyAllamakee County
StateIowa
Coordinates43.39497, -91.50986
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 alignment6: Equal to present minimum criteria
Operating rating48 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.2 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 traffic980 (2022)
Projected traffic980 by 2044
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 76 over Stream built?

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

What condition is Ia 76 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 March 2024.

How much traffic does Ia 76 over Stream carry?

About 980 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is Ia 76 over Stream?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m).

Who owns Ia 76 over Stream?

It is owned by the State Highway Agency.