US Bridges

ST Marys RD over Tucson Arroyo

Good

Pima County, Arizona · 250 W Granada Av · Structure no. 09004

Built
1944
81 years old, rebuilt 2013
Condition
Good
inspected August 2023
Type
Culvert
Concrete Continuous
Length
50 ft
3 main spans
Daily traffic
24,804
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

ST Marys RD over Tucson Arroyo is a concrete continuous culvert carrying ST Marys RD over Tucson Arroyo in Pima County, Arizona. It was built in 1944 and reconstructed in 2013, so it is 81 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 24,804 vehicles a day, roughly 10% of them trucks, projected to reach 24,814 by 2042. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesST Marys RD
CrossesTucson Arroyo
Location250 W Granada Av
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.22797, -110.97892
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 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to 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 spans3
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck25 ft (7.6 m)

Traffic and service

Average daily traffic24,804 (2023)
Projected traffic24,814 by 2042
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 ST Marys RD over Tucson Arroyo built?

It was built in 1944, making it 81 years old in 2025. It was reconstructed in 2013.

What condition is ST Marys RD over Tucson Arroyo 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 ST Marys RD over Tucson Arroyo carry?

About 24,804 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is ST Marys RD over Tucson Arroyo?

The structure is 50 ft (15.2 m) long with a longest span of 12 ft (3.7 m).

Who owns ST Marys RD over Tucson Arroyo?

It is owned by the City or Municipal Highway Agency.