US Bridges

River RD over Colorado River

FairPosted for load

La Paz County, Arizona · 13.4 MI S of I-10 · Structure no. 10618

Built
1981
44 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
400 ft
8 main spans
Daily traffic
210
2020 count
Owner
County
County Highway Agency

About this bridge

River RD over Colorado River is a steel stringer/multi-beam or girder carrying River RD over Colorado River in La Paz County, Arizona. It was built in 1981, so it is 44 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 210 vehicles a day, roughly 30% of them trucks, projected to reach 220 by 2040. The structure is 400 ft (121.9 m) long and 22 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesRiver RD
CrossesColorado River
Location13.4 MI S of I-10
RouteCounty Highway 0
CountyLa Paz County
StateArizona
Coordinates33.4125, -114.6579
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans8
Design loadUnknown
Structure length400 ft (121.9 m)
Longest span50 ft (15.2 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deck25 ft (7.6 m)

Traffic and service

Average daily traffic210 (2020)
Projected traffic220 by 2040
Trucks30%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was River RD over Colorado River built?

It was built in 1981, making it 44 years old in 2025.

What condition is River RD over Colorado 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 2024.

How much traffic does River RD over Colorado River carry?

About 210 vehicles per day (2020 count), of which roughly 30% are trucks.

How long is River RD over Colorado River?

The structure is 400 ft (121.9 m) long with a longest span of 50 ft (15.2 m) and a deck 22 ft wide.

Who owns River RD over Colorado River?

It is owned by the County Highway Agency.