US Bridges

Hess RD over Trib to Miller Creek

Good

Black Hawk County, Iowa · 87-13-36-02-05 · Structure no. 000000000074511

Built
2002
23 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
5
2022 count
Owner
County
County Highway Agency

About this bridge

Hess RD over Trib to Miller Creek is a steel stringer/multi-beam or girder carrying Hess RD over Trib to Miller Creek in Black Hawk County, Iowa. It was built in 2002, so it is 23 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5 vehicles a day, projected to reach 5 by 2043. The structure is 22 ft (6.7 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHess RD
CrossesTrib to Miller Creek
Location87-13-36-02-05
RouteCounty Highway 0
StateIowa
Coordinates42.30899, -92.31833
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating91.1 US tons
Inventory rating70.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width31 ft (9.4 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2022)
Projected traffic5 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 Hess RD over Trib to Miller Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Hess RD over Trib to Miller Creek 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 November 2023.

How much traffic does Hess RD over Trib to Miller Creek carry?

About 5 vehicles per day (2022 count).

How long is Hess RD over Trib to Miller Creek?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 31 ft wide.

Who owns Hess RD over Trib to Miller Creek?

It is owned by the County Highway Agency.