US Bridges

Silverbell RD over Brawley Wash

Fair

Pima County, Arizona · 400FT of W of Aguirre RD · Structure no. 08260

Built
1965
60 years old, rebuilt 1984
Condition
Fair
inspected February 2024
Type
Culvert
Steel
Length
34 ft
3 main spans
Daily traffic
800
2022 count
Owner
County
County Highway Agency

About this bridge

Silverbell RD over Brawley Wash is a steel culvert carrying Silverbell RD over Brawley Wash in Pima County, Arizona. It was built in 1965 and reconstructed in 1984, so it is 60 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 800 vehicles a day, roughly 2% of them trucks, projected to reach 810 by 2042. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesSilverbell RD
CrossesBrawley Wash
Location400FT of W of Aguirre RD
RouteCounty Highway 0
CountyPima County
StateArizona
Coordinates32.46735, -111.33585
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 15
Structure length34 ft (10.4 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2022)
Projected traffic810 by 2042
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Silverbell RD over Brawley Wash built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1984.

What condition is Silverbell RD over Brawley 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 February 2024.

How much traffic does Silverbell RD over Brawley Wash carry?

About 800 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Silverbell RD over Brawley Wash?

The structure is 34 ft (10.4 m) long with a longest span of 7 ft (2.1 m).

Who owns Silverbell RD over Brawley Wash?

It is owned by the County Highway Agency.