US Bridges

I 10; EB & WB over I-10 Side Ditch.

Good

Pima County, Arizona · 16.9 MI N JCT I 19 · Structure no. 06771

Built
1967
58 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
61,861
2024 count
Owner
State
State Highway Agency

About this bridge

I 10; EB & WB over I-10 Side Ditch. is a concrete continuous culvert carrying I 10; EB & WB over I-10 Side Ditch. in Pima County, Arizona. It was built in 1967, so it is 58 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 61,861 vehicles a day, roughly 6% of them trucks, projected to reach 61,871 by 2042. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesI 10; EB & WB
CrossesI-10 Side Ditch.
Location16.9 MI N JCT I 19
RouteInterstate 10
CountyPima County
StateArizona
Coordinates32.3994, -111.1301
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 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 traffic61,861 (2024)
Projected traffic61,871 by 2042
Trucks6%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 10; EB & WB over I-10 Side Ditch. built?

It was built in 1967, making it 58 years old in 2025.

What condition is I 10; EB & WB over I-10 Side Ditch. 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 September 2024.

How much traffic does I 10; EB & WB over I-10 Side Ditch. carry?

About 61,861 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is I 10; EB & WB over I-10 Side Ditch.?

The structure is 24 ft (7.3 m) long with a longest span of 8 ft (2.4 m).

Who owns I 10; EB & WB over I-10 Side Ditch.?

It is owned by the State Highway Agency.