US Bridges

FM River Rd. over Branch Little Sioux Rvr

Good

Cherokee County, Iowa · 091403103 · Structure no. 000000000108221

Built
2008
17 years old
Condition
Good
inspected August 2023
Type
Channel Beam
Concrete
Length
37 ft
1 main span
Daily traffic
748
2022 count
Owner
County
County Highway Agency

About this bridge

FM River Rd. over Branch Little Sioux Rvr is a concrete channel beam carrying FM River Rd. over Branch Little Sioux Rvr in Cherokee County, Iowa. It was built in 2008, so it is 17 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 748 vehicles a day, roughly 7% of them trucks, projected to reach 748 by 2043. The structure is 37 ft (11.3 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM River Rd.
CrossesBranch Little Sioux Rvr
Location091403103
RouteCounty Highway 0
StateIowa
Coordinates42.65154, -95.61977
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating64.3 US tons
Inventory rating38.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span36 ft (11 m)
Deck width31 ft (9.6 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic748 (2022)
Projected traffic748 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$30,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FM River Rd. over Branch Little Sioux Rvr built?

It was built in 2008, making it 17 years old in 2025.

What condition is FM River Rd. over Branch Little Sioux Rvr 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 August 2023.

How much traffic does FM River Rd. over Branch Little Sioux Rvr carry?

About 748 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is FM River Rd. over Branch Little Sioux Rvr?

The structure is 37 ft (11.3 m) long with a longest span of 36 ft (11 m) and a deck 31 ft wide.

Who owns FM River Rd. over Branch Little Sioux Rvr?

It is owned by the County Highway Agency.