US Bridges

Cholla Lake Road over Tanner Wash

Fair

Navajo County, Arizona · 1.3 MI SE JCT B 40 · Structure no. 08160

Built
1926
99 years old, rebuilt 2008
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete
Length
111 ft
4 main spans
Daily traffic
200
2022 count
Owner
County
County Highway Agency

About this bridge

Cholla Lake Road over Tanner Wash is a concrete tee beam carrying Cholla Lake Road over Tanner Wash in Navajo County, Arizona. It was built in 1926 and reconstructed in 2008, so it is 99 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 200 vehicles a day, roughly 5% of them trucks, projected to reach 210 by 2042. The structure is 111 ft (33.8 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCholla Lake Road
CrossesTanner Wash
Location1.3 MI SE JCT B 40
RouteCounty Highway 0
CountyNavajo County
StateArizona
Coordinates34.94515, -110.29961
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length111 ft (33.8 m)
Longest span38 ft (11.6 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic210 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Cholla Lake Road over Tanner Wash built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 2008.

What condition is Cholla Lake Road over Tanner 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 June 2024.

How much traffic does Cholla Lake Road over Tanner Wash carry?

About 200 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Cholla Lake Road over Tanner Wash?

The structure is 111 ft (33.8 m) long with a longest span of 38 ft (11.6 m) and a deck 31 ft wide.

Who owns Cholla Lake Road over Tanner Wash?

It is owned by the County Highway Agency.