US Bridges

San Marcos Blvd over Wash

Good

Pima County, Arizona · 0.4 MI W JCT Mission RD · Structure no. 08812

Built
1969
56 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
1,500
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

San Marcos Blvd over Wash is a concrete continuous culvert carrying San Marcos Blvd over Wash in Pima County, Arizona. It was built in 1969, so it is 56 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 1,500 vehicles a day, projected to reach 1,510 by 2042. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSan Marcos Blvd
CrossesWash
Location0.4 MI W JCT Mission RD
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.20314, -111.00325
Functional classUrban Collector

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 inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2023)
Projected traffic1,510 by 2042
Trucks0%
Lanes on structure2
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 San Marcos Blvd over Wash built?

It was built in 1969, making it 56 years old in 2025.

What condition is San Marcos Blvd 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 May 2023.

How much traffic does San Marcos Blvd over Wash carry?

About 1,500 vehicles per day (2023 count).

How long is San Marcos Blvd over Wash?

The structure is 34 ft (10.4 m) long with a longest span of 8 ft (2.4 m).

Who owns San Marcos Blvd over Wash?

It is owned by the City or Municipal Highway Agency.