US Bridges

I 10; EB & WB over SPRR & 4th Ave Ramp

Fair

Pima County, Arizona · 1.0 MI E of JCT I 19 · Structure no. 02197

Built
1991
34 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
168 ft
3 main spans
Daily traffic
108,489
2022 count
Owner
State
State Highway Agency

About this bridge

I 10; EB & WB over SPRR & 4th Ave Ramp is a steel continuous stringer/multi-beam or girder carrying I 10; EB & WB over SPRR & 4th Ave Ramp in Pima County, Arizona. It was built in 1991, so it is 34 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 6 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 108,489 vehicles a day, roughly 10% of them trucks, projected to reach 108,499 by 2042. The structure is 168 ft (51.2 m) long and 132 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 10; EB & WB
CrossesSPRR & 4th Ave Ramp
Location1.0 MI E of JCT I 19
RouteInterstate 10
CountyPima County
StateArizona
Coordinates32.1854, -110.9617
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length168 ft (51.2 m)
Longest span64 ft (19.5 m)
Deck width132 ft (40.1 m)
Roadway width126 ft (38.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic108,489 (2022)
Projected traffic108,499 by 2042
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 10; EB & WB over SPRR & 4th Ave Ramp built?

It was built in 1991, making it 34 years old in 2025.

What condition is I 10; EB & WB over SPRR & 4th Ave Ramp 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 October 2023.

How much traffic does I 10; EB & WB over SPRR & 4th Ave Ramp carry?

About 108,489 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is I 10; EB & WB over SPRR & 4th Ave Ramp?

The structure is 168 ft (51.2 m) long with a longest span of 64 ft (19.5 m) and a deck 132 ft wide.

Who owns I 10; EB & WB over SPRR & 4th Ave Ramp?

It is owned by the State Highway Agency.