US Bridges

LA Cholla Blvd NB over Rillito River

Good

Pima County, Arizona · S/O LA Cholla/River RD · Structure no. 11301

Built
2011
14 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
362 ft
3 main spans
Daily traffic
12,459
2025 count
Owner
County
County Highway Agency

About this bridge

LA Cholla Blvd NB over Rillito River is a prestressed concrete continuous stringer/multi-beam or girder carrying LA Cholla Blvd NB over Rillito River in Pima County, Arizona. It was built in 2011, so it is 14 years old, younger 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 12,459 vehicles a day, roughly 5% of them trucks, projected to reach 12,469 by 2042. The structure is 362 ft (110.3 m) long and 51 ft wide.

CarriesLA Cholla Blvd NB
CrossesRillito River
LocationS/O LA Cholla/River RD
RouteCounty Highway 0
StateArizona
Coordinates32.30256, -111.01196
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating55 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length362 ft (110.3 m)
Longest span119 ft (36.3 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,459 (2025)
Projected traffic12,469 by 2042
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 LA Cholla Blvd NB over Rillito River built?

It was built in 2011, making it 14 years old in 2025.

What condition is LA Cholla Blvd NB over Rillito River 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 January 2025.

How much traffic does LA Cholla Blvd NB over Rillito River carry?

About 12,459 vehicles per day (2025 count), of which roughly 5% are trucks.

How long is LA Cholla Blvd NB over Rillito River?

The structure is 362 ft (110.3 m) long with a longest span of 119 ft (36.3 m) and a deck 51 ft wide.

Who owns LA Cholla Blvd NB over Rillito River?

It is owned by the County Highway Agency.