US Bridges

Wrightstown RD over Robb Wash

FairPosted for load

Pima County, Arizona · 0.9 MI E Tanque Verde RD · Structure no. 08276

Built
1972
53 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
11,000
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Wrightstown RD over Robb Wash is a concrete continuous culvert carrying Wrightstown RD over Robb Wash in Pima County, Arizona. It was built in 1972, so it is 53 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. Its operating status is: posted for load restriction.

It carries about 11,000 vehicles a day, roughly 10% of them trucks, projected to reach 11,010 by 2042. The structure is 38 ft (11.6 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWrightstown RD
CrossesRobb Wash
Location0.9 MI E Tanque Verde RD
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.24856, -110.812
Functional classUrban Minor Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 48 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,000 (2022)
Projected traffic11,010 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wrightstown RD over Robb Wash built?

It was built in 1972, making it 53 years old in 2025.

What condition is Wrightstown RD over Robb 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 December 2023.

How much traffic does Wrightstown RD over Robb Wash carry?

About 11,000 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Wrightstown RD over Robb Wash?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m) and a deck 44 ft wide.

Who owns Wrightstown RD over Robb Wash?

It is owned by the City or Municipal Highway Agency.