US Bridges

Idaho Street over Branch Middle River

Good

Warren County, Iowa · 076251503 · Structure no. 000000000334741

Built
2021
4 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
113
2022 count
Owner
County
County Highway Agency

About this bridge

Idaho Street over Branch Middle River is a concrete culvert carrying Idaho Street over Branch Middle River in Warren County, Iowa. It was built in 2021, so it is 4 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 113 vehicles a day, projected to reach 113 by 2044. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesIdaho Street
CrossesBranch Middle River
Location076251503
RouteCounty Highway 0
StateIowa
Coordinates41.38461, -93.7179
Functional classRural Local

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.
Culvert9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating46.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length24 ft (7.3 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic113 (2022)
Projected traffic113 by 2044
Trucks0%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Idaho Street over Branch Middle River built?

It was built in 2021, making it 4 years old in 2025.

What condition is Idaho Street over Branch Middle River 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 October 2024.

How much traffic does Idaho Street over Branch Middle River carry?

About 113 vehicles per day (2022 count).

How long is Idaho Street over Branch Middle River?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m).

Who owns Idaho Street over Branch Middle River?

It is owned by the County Highway Agency.