US Bridges

Portal RD over Cave Creek

FairPosted for load

Cochise County, Arizona · 7.1 MI W JCT SR 80 · Structure no. 08089

Built
1936
89 years old, rebuilt 1956
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
61 ft
2 main spans
Daily traffic
400
2021 count
Owner
County
County Highway Agency

About this bridge

Portal RD over Cave Creek is a concrete continuous slab carrying Portal RD over Cave Creek in Cochise County, Arizona. It was built in 1936 and reconstructed in 1956, so it is 89 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. Its operating status is: posted for load restriction.

It carries about 400 vehicles a day, roughly 1% of them trucks, projected to reach 410 by 2041. The structure is 61 ft (18.6 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPortal RD
CrossesCave Creek
Location7.1 MI W JCT SR 80
RouteCounty Highway 0
CountyCochise County
StateArizona
Coordinates31.91414, -109.13992
Functional classRural Minor Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span29 ft (8.8 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 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 closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Portal RD over Cave Creek built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1956.

What condition is Portal RD over Cave Creek 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 Portal RD over Cave Creek carry?

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

How long is Portal RD over Cave Creek?

The structure is 61 ft (18.6 m) long with a longest span of 29 ft (8.8 m) and a deck 20 ft wide.

Who owns Portal RD over Cave Creek?

It is owned by the County Highway Agency.