US Bridges

W Bennington RD over Trib to Cedar River

Fair

Black Hawk County, Iowa · 90-13-21-01-10 · Structure no. 000000000076620

Built
1948
77 years old
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
29
2022 count
Owner
County
County Highway Agency

About this bridge

W Bennington RD over Trib to Cedar River is a steel stringer/multi-beam or girder carrying W Bennington RD over Trib to Cedar River in Black Hawk County, Iowa. It was built in 1948, so it is 77 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 29 vehicles a day, projected to reach 29 by 2043. The structure is 22 ft (6.7 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesW Bennington RD
CrossesTrib to Cedar River
Location90-13-21-01-10
RouteCounty Highway 0
CountyBlack Hawk County
StateIowa
Coordinates42.5998, -92.38508
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.5 US tons
Inventory rating27.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2022)
Projected traffic29 by 2043
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 W Bennington RD over Trib to Cedar River built?

It was built in 1948, making it 77 years old in 2025.

What condition is W Bennington RD over Trib to Cedar River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2022.

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

About 29 vehicles per day (2022 count).

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

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 20 ft wide.

Who owns W Bennington RD over Trib to Cedar River?

It is owned by the County Highway Agency.