US Bridges

FM over Br Upper Iowa River

Fair

Allamakee County, Iowa · 099061504 · Structure no. 000000000062905

Built
1997
28 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
20 ft
2 main spans
Daily traffic
69
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Br Upper Iowa River is a concrete continuous culvert carrying FM over Br Upper Iowa River in Allamakee County, Iowa. It was built in 1997, so it is 28 years old, younger 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 69 vehicles a day, projected to reach 69 by 2044. The structure is 20 ft (6.1 m) long and 48 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesFM
CrossesBr Upper Iowa River
Location099061504
RouteCounty Highway 0
CountyAllamakee County
StateIowa
Coordinates43.38917, -91.54743
Functional classRural Minor 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span10 ft (3 m)
Deck width48 ft (14.6 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69 (2022)
Projected traffic69 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Br Upper Iowa River built?

It was built in 1997, making it 28 years old in 2025.

What condition is FM over Br Upper Iowa 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 April 2024.

How much traffic does FM over Br Upper Iowa River carry?

About 69 vehicles per day (2022 count).

How long is FM over Br Upper Iowa River?

The structure is 20 ft (6.1 m) long with a longest span of 10 ft (3 m) and a deck 48 ft wide.

Who owns FM over Br Upper Iowa River?

It is owned by the County Highway Agency.