US Bridges

Paradise-Portal RD over Silver Creek

Fair

Cochise County, Arizona · 7.9 MI W JCT SR 80 · Structure no. 10094

Built
1934
91 years old, rebuilt 1955
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
79 ft
3 main spans
Daily traffic
60
2021 count
Owner
County
County Highway Agency

About this bridge

Paradise-Portal RD over Silver Creek is a concrete continuous slab carrying Paradise-Portal RD over Silver Creek in Cochise County, Arizona. It was built in 1934 and reconstructed in 1955, so it is 91 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.

It carries about 60 vehicles a day, projected to reach 70 by 2041. The structure is 79 ft (24.1 m) long and 16 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

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CarriesParadise-Portal RD
CrossesSilver Creek
Location7.9 MI W JCT SR 80
RouteCounty Highway 0
CountyCochise County
StateArizona
Coordinates31.91548, -109.15437
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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span26 ft (7.9 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2021)
Projected traffic70 by 2041
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 Paradise-Portal RD over Silver Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1955.

What condition is Paradise-Portal RD over Silver 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 Paradise-Portal RD over Silver Creek carry?

About 60 vehicles per day (2021 count).

How long is Paradise-Portal RD over Silver Creek?

The structure is 79 ft (24.1 m) long with a longest span of 26 ft (7.9 m) and a deck 16 ft wide.

Who owns Paradise-Portal RD over Silver Creek?

It is owned by the County Highway Agency.