US Bridges

West Bennington RD over Trib to Cedar River

Good

Black Hawk County, Iowa · 90-13-21-01-05 · Structure no. 000000000366570

Built
2020
5 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
29
2022 count
Owner
County
County Highway Agency

About this bridge

West Bennington RD over Trib to Cedar River is a steel stringer/multi-beam or girder carrying West Bennington RD over Trib to Cedar River in Black Hawk County, Iowa. It was built in 2020, so it is 5 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 29 vehicles a day, projected to reach 29 by 2044. The structure is 34 ft (10.4 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesWest Bennington RD
CrossesTrib to Cedar River
Location90-13-21-01-05
RouteCounty Highway 0
CountyBlack Hawk County
StateIowa
Coordinates42.59958, -92.39402
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
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span32 ft (9.8 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2022)
Projected traffic29 by 2044
Trucks0%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was West Bennington RD over Trib to Cedar River built?

It was built in 2020, making it 5 years old in 2025.

What condition is West Bennington RD over Trib to Cedar 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 2024.

How much traffic does West Bennington RD over Trib to Cedar River carry?

About 29 vehicles per day (2022 count).

How long is West Bennington RD over Trib to Cedar River?

The structure is 34 ft (10.4 m) long with a longest span of 32 ft (9.8 m) and a deck 31 ft wide.

Who owns West Bennington RD over Trib to Cedar River?

It is owned by the County Highway Agency.