US Bridges

FM over Branch Yellow River

Poor

Allamakee County, Iowa · 096061608 · Structure no. 000000000061630

Built
1922
103 years old
Condition
Poor
inspected May 2024
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
373
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Branch Yellow River is a concrete culvert carrying FM over Branch Yellow River in Allamakee County, Iowa. It was built in 1922, so it is 103 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 373 vehicles a day, roughly 52% of them trucks, projected to reach 373 by 2044. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFM
CrossesBranch Yellow River
Location096061608
RouteCounty Highway 0
CountyAllamakee County
StateIowa
Coordinates43.13908, -91.56379
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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
DeckNot applicable
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic373 (2022)
Projected traffic373 by 2044
Trucks52%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
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 1922, making it 103 years old in 2025.

What condition is FM over Branch Yellow River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does FM over Branch Yellow River carry?

About 373 vehicles per day (2022 count), of which roughly 52% are trucks.

How long is FM over Branch Yellow River?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m).

Who owns FM over Branch Yellow River?

It is owned by the County Highway Agency.