US Bridges

Alsdorf Road over I 10

Fair

Pinal County, Arizona · 3.8 MI W JCT SR 84 · Structure no. 00944

Built
1965
60 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
426 ft
5 main spans
Daily traffic
846
2021 count
Owner
State
State Highway Agency

About this bridge

Alsdorf Road over I 10 is a steel continuous stringer/multi-beam or girder carrying Alsdorf Road over I 10 in Pinal County, Arizona. It was built in 1965, so it is 60 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 846 vehicles a day, roughly 2% of them trucks, projected to reach 856 by 2041. The structure is 426 ft (129.8 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAlsdorf Road
CrossesI 10
Location3.8 MI W JCT SR 84
RouteCounty Highway 0
CountyPinal County
StateArizona
Coordinates32.7485, -111.574
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length426 ft (129.8 m)
Longest span92 ft (28 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic846 (2021)
Projected traffic856 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Alsdorf Road over I 10 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Alsdorf Road over I 10 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 August 2024.

How much traffic does Alsdorf Road over I 10 carry?

About 846 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Alsdorf Road over I 10?

The structure is 426 ft (129.8 m) long with a longest span of 92 ft (28 m) and a deck 31 ft wide.

Who owns Alsdorf Road over I 10?

It is owned by the State Highway Agency.