US Bridges

Portal Road over San Simon River

FairPosted for load

Cochise County, Arizona · 2.2 MI S JCT Power RD · Structure no. 08091

Built
1957
68 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
200 ft
6 main spans
Daily traffic
350
2021 count
Owner
County
County Highway Agency

About this bridge

Portal Road over San Simon River is a concrete continuous slab carrying Portal Road over San Simon River in Cochise County, Arizona. It was built in 1957, so it is 68 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 5 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 350 vehicles a day, roughly 1% of them trucks, projected to reach 360 by 2041. The structure is 200 ft (61 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesPortal Road
CrossesSan Simon River
Location2.2 MI S JCT Power RD
RouteCounty Highway 0
CountyCochise County
StateArizona
Coordinates32.2247, -109.1762
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length200 ft (61 m)
Longest span35 ft (10.7 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2021)
Projected traffic360 by 2041
Trucks1%
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 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 Road over San Simon River built?

It was built in 1957, making it 68 years old in 2025.

What condition is Portal Road over San Simon 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 January 2025.

How much traffic does Portal Road over San Simon River carry?

About 350 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Portal Road over San Simon River?

The structure is 200 ft (61 m) long with a longest span of 35 ft (10.7 m) and a deck 29 ft wide.

Who owns Portal Road over San Simon River?

It is owned by the County Highway Agency.