US Bridges

Hearst RD over Trib to Dry Run Creek

Fair

Black Hawk County, Iowa · 89-14-33-02-10 · Structure no. 000000000075971

Built
1978
47 years old, rebuilt 1990
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
39 ft
2 main spans
Daily traffic
33
2022 count
Owner
County
County Highway Agency

About this bridge

Hearst RD over Trib to Dry Run Creek is a wood or timber stringer/multi-beam or girder carrying Hearst RD over Trib to Dry Run Creek in Black Hawk County, Iowa. It was built in 1978 and reconstructed in 1990, so it is 47 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 5 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 33 vehicles a day, projected to reach 33 by 2043. The structure is 39 ft (11.9 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHearst RD
CrossesTrib to Dry Run Creek
Location89-14-33-02-10
RouteCounty Highway 0
CountyBlack Hawk County
StateIowa
Coordinates42.48254, -92.5145
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.5 US tons
Inventory rating51.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span19 ft (5.8 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33 (2022)
Projected traffic33 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 Hearst RD over Trib to Dry Run Creek built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 1990.

What condition is Hearst RD over Trib to Dry Run Creek 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 Hearst RD over Trib to Dry Run Creek carry?

About 33 vehicles per day (2022 count).

How long is Hearst RD over Trib to Dry Run Creek?

The structure is 39 ft (11.9 m) long with a longest span of 19 ft (5.8 m) and a deck 23 ft wide.

Who owns Hearst RD over Trib to Dry Run Creek?

It is owned by the County Highway Agency.