US Bridges

SR-24 Gateway Fwy over Mountain Road

Good

Maricopa County, Arizona · Mountain Road & SR24 · Structure no. 20185

Built
2022
3 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
140 ft
1 main span
Daily traffic
22,000
2020 count
Owner
State
State Highway Agency

About this bridge

SR-24 Gateway Fwy over Mountain Road is a prestressed concrete stringer/multi-beam or girder carrying SR-24 Gateway Fwy over Mountain Road in Maricopa County, Arizona. It was built in 2022, so it is 3 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 22,000 vehicles a day, roughly 6% of them trucks, projected to reach 22,010 by 2040. The structure is 140 ft (42.7 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSR-24 Gateway Fwy
CrossesMountain Road
LocationMountain Road & SR24
RouteState Highway 24
CountyMaricopa County
StateArizona
Coordinates33.29911, -111.59264
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length140 ft (42.7 m)
Longest span136 ft (41.5 m)
Deck width47 ft (14.4 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,000 (2020)
Projected traffic22,010 by 2040
Trucks6%
Lanes on structure2
Traffic directionOne-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 SR-24 Gateway Fwy over Mountain Road built?

It was built in 2022, making it 3 years old in 2025.

What condition is SR-24 Gateway Fwy over Mountain Road 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 June 2024.

How much traffic does SR-24 Gateway Fwy over Mountain Road carry?

About 22,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is SR-24 Gateway Fwy over Mountain Road?

The structure is 140 ft (42.7 m) long with a longest span of 136 ft (41.5 m) and a deck 47 ft wide.

Who owns SR-24 Gateway Fwy over Mountain Road?

It is owned by the State Highway Agency.