US Bridges

Broadway Road over Robb Wash

Fair

Pima County, Arizona · Broadway @ Sarnoff · Structure no. 09038

Built
1968
57 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
45 ft
3 main spans
Daily traffic
48,000
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Broadway Road over Robb Wash is a concrete continuous culvert carrying Broadway Road over Robb Wash in Pima County, Arizona. It was built in 1968, so it is 57 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 48,000 vehicles a day, roughly 10% of them trucks, projected to reach 48,010 by 2042. The structure is 45 ft (13.7 m) long and 145 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesBroadway Road
CrossesRobb Wash
LocationBroadway @ Sarnoff
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.22097, -110.81536
Functional classUrban Other Principal 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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span10 ft (3 m)
Deck width145 ft (44.2 m)
Roadway width110 ft (33.5 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic48,000 (2022)
Projected traffic48,010 by 2042
Trucks10%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Broadway Road over Robb Wash built?

It was built in 1968, making it 57 years old in 2025.

What condition is Broadway Road 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 Broadway Road over Robb Wash carry?

About 48,000 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Broadway Road over Robb Wash?

The structure is 45 ft (13.7 m) long with a longest span of 10 ft (3 m) and a deck 145 ft wide.

Who owns Broadway Road over Robb Wash?

It is owned by the City or Municipal Highway Agency.