US Bridges

Magma Ave over Queen Creek

Fair

Pinal County, Arizona · 0.1 MI N JCT US 60 · Structure no. 08479

Built
1910
115 years old, rebuilt 1947
Condition
Fair
inspected May 2024
Type
Arch - Deck
Concrete
Length
118 ft
2 main spans
Daily traffic
2,319
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Magma Ave over Queen Creek is a concrete arch - deck carrying Magma Ave over Queen Creek in Pinal County, Arizona. It was built in 1910 and reconstructed in 1947, so it is 115 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 2,319 vehicles a day, roughly 1% of them trucks, projected to reach 2,329 by 2041. The structure is 118 ft (36 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMagma Ave
CrossesQueen Creek
Location0.1 MI N JCT US 60
RouteCity Street 0
CountyPinal County
StateArizona
Coordinates33.2926, -111.096
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length118 ft (36 m)
Longest span57 ft (17.4 m)
Deck width41 ft (12.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,319 (2021)
Projected traffic2,329 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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$1,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Magma Ave over Queen Creek built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1947.

What condition is Magma Ave over Queen 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 May 2024.

How much traffic does Magma Ave over Queen Creek carry?

About 2,319 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Magma Ave over Queen Creek?

The structure is 118 ft (36 m) long with a longest span of 57 ft (17.4 m) and a deck 41 ft wide.

Who owns Magma Ave over Queen Creek?

It is owned by the Town or Township Highway Agency.