US Bridges

I 10 over Rillito Creek

Good

Pima County, Arizona · 9.7 MI N JCT I-19 · Structure no. 20210

Built
2023
2 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
355 ft
3 main spans
Daily traffic
136,020
2023 count
Owner
State
State Highway Agency

About this bridge

I 10 over Rillito Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying I 10 over Rillito Creek in Pima County, Arizona. It was built in 2023, so it is 2 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 136,020 vehicles a day, roughly 13% of them trucks, projected to reach 136,030 by 2042. The structure is 355 ft (108.2 m) long and 173 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI 10
CrossesRillito Creek
Location9.7 MI N JCT I-19
RouteInterstate 10
CountyPima County
StateArizona
Coordinates32.3156, -111.0464
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length355 ft (108.2 m)
Longest span117 ft (35.8 m)
Deck width173 ft (52.7 m)
Roadway width167 ft (50.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic136,020 (2023)
Projected traffic136,030 by 2042
Trucks13%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I 10 over Rillito Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is I 10 over Rillito Creek 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 October 2024.

How much traffic does I 10 over Rillito Creek carry?

About 136,020 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is I 10 over Rillito Creek?

The structure is 355 ft (108.2 m) long with a longest span of 117 ft (35.8 m) and a deck 173 ft wide.

Who owns I 10 over Rillito Creek?

It is owned by the State Highway Agency.