US Bridges

Ashley RD over Trib to Cedar River

Fair

Black Hawk County, Iowa · 87-11-07-03-10 · Structure no. 000000000073721

Built
1983
42 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
40 ft
2 main spans
Daily traffic
44
2022 count
Owner
County
County Highway Agency

About this bridge

Ashley RD over Trib to Cedar River is a wood or timber stringer/multi-beam or girder carrying Ashley RD over Trib to Cedar River in Black Hawk County, Iowa. It was built in 1983, so it is 42 years old, younger 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 44 vehicles a day, projected to reach 44 by 2043. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesAshley RD
CrossesTrib to Cedar River
Location87-11-07-03-10
RouteCounty Highway 0
CountyBlack Hawk County
StateIowa
Coordinates42.36604, -92.17762
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating35.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span19 ft (5.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (2022)
Projected traffic44 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Ashley RD over Trib to Cedar River built?

It was built in 1983, making it 42 years old in 2025.

What condition is Ashley 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 November 2023.

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

About 44 vehicles per day (2022 count).

How long is Ashley RD over Trib to Cedar River?

The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.8 m) and a deck 24 ft wide.

Who owns Ashley RD over Trib to Cedar River?

It is owned by the County Highway Agency.