US Bridges

Dome Rock RD over Unnamed Wash

Fair

La Paz County, Arizona · 3.6 MI E US 95 · Structure no. 10222

Built
1970
55 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete
Length
63 ft
3 main spans
Daily traffic
504
2022 count
Owner
County
County Highway Agency

About this bridge

Dome Rock RD over Unnamed Wash is a concrete slab carrying Dome Rock RD over Unnamed Wash in La Paz County, Arizona. It was built in 1970, so it is 55 years old, older than the Arizona average of 47.8 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 504 vehicles a day, roughly 5% of them trucks, projected to reach 514 by 2042. The structure is 63 ft (19.2 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesDome Rock RD
CrossesUnnamed Wash
Location3.6 MI E US 95
RouteCounty Highway 0
CountyLa Paz County
StateArizona
Coordinates33.6689, -114.1608
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span21 ft (6.4 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic504 (2022)
Projected traffic514 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Dome Rock RD over Unnamed Wash built?

It was built in 1970, making it 55 years old in 2025.

What condition is Dome Rock RD over Unnamed Wash 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 January 2024.

How much traffic does Dome Rock RD over Unnamed Wash carry?

About 504 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Dome Rock RD over Unnamed Wash?

The structure is 63 ft (19.2 m) long with a longest span of 21 ft (6.4 m) and a deck 28 ft wide.

Who owns Dome Rock RD over Unnamed Wash?

It is owned by the County Highway Agency.