US Bridges

I 10; EB over Sibyl RD

Fair

Cochise County, Arizona · 10.4 MI E JCT SR 90 · Structure no. 00574

Built
1960
65 years old, rebuilt 1977
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
10,918
2023 count
Owner
State
State Highway Agency

About this bridge

I 10; EB over Sibyl RD is a concrete continuous slab carrying I 10; EB over Sibyl RD in Cochise County, Arizona. It was built in 1960 and reconstructed in 1977, so it is 65 years old, older 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 10,918 vehicles a day, roughly 39% of them trucks, projected to reach 10,928 by 2042. The structure is 90 ft (27.4 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesI 10; EB
CrossesSibyl RD
Location10.4 MI E JCT SR 90
RouteInterstate 10
CountyCochise County
StateArizona
Coordinates31.9924, -110.1763
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span33 ft (10.1 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,918 (2023)
Projected traffic10,928 by 2042
Trucks39%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 over Sibyl RD built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1977.

What condition is I 10; EB over Sibyl RD 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 January 2025.

How much traffic does I 10; EB over Sibyl RD carry?

About 10,918 vehicles per day (2023 count), of which roughly 39% are trucks.

How long is I 10; EB over Sibyl RD?

The structure is 90 ft (27.4 m) long with a longest span of 33 ft (10.1 m) and a deck 43 ft wide.

Who owns I 10; EB over Sibyl RD?

It is owned by the State Highway Agency.