US Bridges

River RD over Branch Upper Iowa River

Good

Howard County, Iowa · 100130703 · Structure no. 000000000183801

Built
2015
10 years old
Condition
Good
inspected March 2022
Type
Slab
Concrete Continuous
Length
113 ft
3 main spans
Daily traffic
59
2022 count
Owner
County
County Highway Agency

About this bridge

River RD over Branch Upper Iowa River is a concrete continuous slab carrying River RD over Branch Upper Iowa River in Howard County, Iowa. It was built in 2015, so it is 10 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 59 vehicles a day, projected to reach 59 by 2043. The structure is 113 ft (34.4 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesRiver RD
CrossesBranch Upper Iowa River
Location100130703
RouteCounty Highway 0
StateIowa
Coordinates43.49159, -92.42439
Functional classRural Minor 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 inspectionMarch 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length113 ft (34.4 m)
Longest span43 ft (13.1 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59 (2022)
Projected traffic59 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 River RD over Branch Upper Iowa River built?

It was built in 2015, making it 10 years old in 2025.

What condition is River RD over Branch Upper Iowa 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 March 2022.

How much traffic does River RD over Branch Upper Iowa River carry?

About 59 vehicles per day (2022 count).

How long is River RD over Branch Upper Iowa River?

The structure is 113 ft (34.4 m) long with a longest span of 43 ft (13.1 m) and a deck 33 ft wide.

Who owns River RD over Branch Upper Iowa River?

It is owned by the County Highway Agency.