US Bridges

FM over Branch Yellow River

Fair

Allamakee County, Iowa · 097061104 · Structure no. 000000000061990

Built
1959
66 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
422
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Branch Yellow River is a concrete continuous culvert carrying FM over Branch Yellow River in Allamakee County, Iowa. It was built in 1959, so it is 66 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 5 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 422 vehicles a day, roughly 15% of them trucks, projected to reach 422 by 2044. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM
CrossesBranch Yellow River
Location097061104
RouteCounty Highway 0
CountyAllamakee County
StateIowa
Coordinates43.23258, -91.52675
Functional classRural Major Collector

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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating25.6 US tons
Inventory rating18.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length34 ft (10.4 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 traffic422 (2022)
Projected traffic422 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 FM over Branch Yellow River built?

It was built in 1959, making it 66 years old in 2025.

What condition is FM over Branch Yellow River 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 May 2024.

How much traffic does FM over Branch Yellow River carry?

About 422 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is FM over Branch Yellow River?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m).

Who owns FM over Branch Yellow River?

It is owned by the County Highway Agency.