US Bridges

E Washburn RD over Trib to Miller Creek

Good

Black Hawk County, Iowa · 88-12-28-01-10 · Structure no. 000000000075161

Built
2014
11 years old
Condition
Good
inspected March 2022
Type
Slab
Concrete Continuous
Length
70 ft
3 main spans
Daily traffic
1,571
2022 count
Owner
County
County Highway Agency

About this bridge

E Washburn RD over Trib to Miller Creek is a concrete continuous slab carrying E Washburn RD over Trib to Miller Creek in Black Hawk County, Iowa. It was built in 2014, so it is 11 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 1,571 vehicles a day, roughly 8% of them trucks, projected to reach 1,571 by 2043. The structure is 70 ft (21.3 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesE Washburn RD
CrossesTrib to Miller Creek
Location88-12-28-01-10
RouteCounty Highway 0
StateIowa
Coordinates42.4137, -92.25659
Functional classUrban Collector

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 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating45.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length70 ft (21.3 m)
Longest span28 ft (8.5 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,571 (2022)
Projected traffic1,571 by 2043
Trucks8%
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 E Washburn RD over Trib to Miller Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is E Washburn 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 March 2022.

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

About 1,571 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is E Washburn RD over Trib to Miller Creek?

The structure is 70 ft (21.3 m) long with a longest span of 28 ft (8.5 m) and a deck 33 ft wide.

Who owns E Washburn RD over Trib to Miller Creek?

It is owned by the County Highway Agency.