US Bridges

Pomerene Road over Tres Alamos Wash

Fair

Cochise County, Arizona · 8.6 MI N JCT I-10 · Structure no. 07578

Built
1971
54 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
286 ft
3 main spans
Daily traffic
400
2021 count
Owner
County
County Highway Agency

About this bridge

Pomerene Road over Tres Alamos Wash is a prestressed concrete continuous stringer/multi-beam or girder carrying Pomerene Road over Tres Alamos Wash in Cochise County, Arizona. It was built in 1971, so it is 54 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 400 vehicles a day, roughly 1% of them trucks, projected to reach 410 by 2041. The structure is 286 ft (87.2 m) long and 47 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesPomerene Road
CrossesTres Alamos Wash
Location8.6 MI N JCT I-10
RouteCounty Highway 0
CountyCochise County
StateArizona
Coordinates32.0648, -110.2846
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length286 ft (87.2 m)
Longest span95 ft (29 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2021)
Projected traffic410 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Pomerene Road over Tres Alamos Wash built?

It was built in 1971, making it 54 years old in 2025.

What condition is Pomerene Road over Tres Alamos 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 2025.

How much traffic does Pomerene Road over Tres Alamos Wash carry?

About 400 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Pomerene Road over Tres Alamos Wash?

The structure is 286 ft (87.2 m) long with a longest span of 95 ft (29 m) and a deck 47 ft wide.

Who owns Pomerene Road over Tres Alamos Wash?

It is owned by the County Highway Agency.