US Bridges

Main ST over Little Sioux River

Good

Cherokee County, Iowa · 090413101 · Structure no. 000000000011761

Built
2013
12 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
418 ft
4 main spans
Daily traffic
1,112
2022 count
Owner
County
County Highway Agency

About this bridge

Main ST over Little Sioux River is a prestressed concrete stringer/multi-beam or girder carrying Main ST over Little Sioux River in Cherokee County, Iowa. It was built in 2013, so it is 12 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,112 vehicles a day, projected to reach 1,112 by 2043. The structure is 418 ft (127.4 m) long and 33 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesMain ST
CrossesLittle Sioux River
Location090413101
RouteCity Street 0
CountyCherokee County
StateIowa
Coordinates42.57559, -95.72699
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length418 ft (127.4 m)
Longest span111 ft (33.8 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,112 (2022)
Projected traffic1,112 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Main ST over Little Sioux River built?

It was built in 2013, making it 12 years old in 2025.

What condition is Main ST over Little Sioux 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 August 2023.

How much traffic does Main ST over Little Sioux River carry?

About 1,112 vehicles per day (2022 count).

How long is Main ST over Little Sioux River?

The structure is 418 ft (127.4 m) long with a longest span of 111 ft (33.8 m) and a deck 33 ft wide.

Who owns Main ST over Little Sioux River?

It is owned by the County Highway Agency.