US Bridges

Silverbell Road over Silvercroft Wash

Good

Pima County, Arizona · 0.2 MI S JCT Spdwy Blvd · Structure no. 09351

Built
1975
50 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete Continuous
Length
43 ft
4 main spans
Daily traffic
13,823
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Silverbell Road over Silvercroft Wash is a concrete continuous culvert carrying Silverbell Road over Silvercroft Wash in Pima County, Arizona. It was built in 1975, so it is 50 years old, older 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 13,823 vehicles a day, roughly 10% of them trucks, projected to reach 13,833 by 2042. The structure is 43 ft (13.1 m) long and 130 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSilverbell Road
CrossesSilvercroft Wash
Location0.2 MI S JCT Spdwy Blvd
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.2329, -111.0025
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width130 ft (39.5 m)
Roadway width114 ft (34.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,823 (2023)
Projected traffic13,833 by 2042
Trucks10%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Silverbell Road over Silvercroft Wash built?

It was built in 1975, making it 50 years old in 2025.

What condition is Silverbell Road over Silvercroft 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 2023.

How much traffic does Silverbell Road over Silvercroft Wash carry?

About 13,823 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Silverbell Road over Silvercroft Wash?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m) and a deck 130 ft wide.

Who owns Silverbell Road over Silvercroft Wash?

It is owned by the City or Municipal Highway Agency.