US Bridges

EB Frontage Road over Rillito Creek

Fair

Pima County, Arizona · 9.7 MI N JCT I-19 · Structure no. 01397

Built
2001
24 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
345 ft
4 main spans
Daily traffic
3,232
2022 count
Owner
State
State Highway Agency

About this bridge

EB Frontage Road over Rillito Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying EB Frontage Road over Rillito Creek in Pima County, Arizona. It was built in 2001, so it is 24 years old, younger 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 5 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 3,232 vehicles a day, roughly 5% of them trucks, projected to reach 3,242 by 2042. The structure is 345 ft (105.2 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesEB Frontage Road
CrossesRillito Creek
Location9.7 MI N JCT I-19
RouteState Highway 10
CountyPima County
StateArizona
Coordinates32.3155, -111.0469
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length345 ft (105.2 m)
Longest span86 ft (26.2 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,232 (2022)
Projected traffic3,242 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 EB Frontage Road over Rillito Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is EB Frontage Road over Rillito Creek 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 2024.

How much traffic does EB Frontage Road over Rillito Creek carry?

About 3,232 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is EB Frontage Road over Rillito Creek?

The structure is 345 ft (105.2 m) long with a longest span of 86 ft (26.2 m) and a deck 47 ft wide.

Who owns EB Frontage Road over Rillito Creek?

It is owned by the State Highway Agency.