US Bridges

Silverbell Road over Wash

Good

Pima County, Arizona · 0.31 MI N of Grant RD · Structure no. 09943

Built
1987
38 years old, rebuilt 2015
Condition
Good
inspected August 2021
Type
Culvert
Concrete Continuous
Length
64 ft
5 main spans
Daily traffic
10,053
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Silverbell Road over Wash is a concrete continuous culvert carrying Silverbell Road over Wash in Pima County, Arizona. It was built in 1987 and reconstructed in 2015, so it is 38 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,053 vehicles a day, roughly 10% of them trucks, projected to reach 10,063 by 2040. The structure is 64 ft (19.5 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSilverbell Road
CrossesWash
Location0.31 MI N of Grant RD
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.2553, -111.0163
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,053 (2020)
Projected traffic10,063 by 2040
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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
NavigationNo navigation control on waterway

Frequently asked questions

When was Silverbell Road over Wash built?

It was built in 1987, making it 38 years old in 2025. It was reconstructed in 2015.

What condition is Silverbell Road over Wash in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2021.

How much traffic does Silverbell Road over Wash carry?

About 10,053 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Silverbell Road over Wash?

The structure is 64 ft (19.5 m) long with a longest span of 12 ft (3.7 m).

Who owns Silverbell Road over Wash?

It is owned by the City or Municipal Highway Agency.