US Bridges

Alma School RD over Salt River(s.Channel)

Fair

Maricopa County, Arizona · 0.25 MI N/ Mclellan · Structure no. 08554

Built
1980
45 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
410 ft
7 main spans
Daily traffic
11,894
2020 count
Owner
County
County Highway Agency

About this bridge

Alma School RD over Salt River(s.Channel) is a prestressed concrete continuous box beam or girders - multiple carrying Alma School RD over Salt River(s.Channel) in Maricopa County, Arizona. It was built in 1980, so it is 45 years old, younger 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 5 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 11,894 vehicles a day, roughly 15% of them trucks, projected to reach 11,904 by 2040. The structure is 410 ft (125 m) long and 84 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAlma School RD
CrossesSalt River(s.Channel)
Location0.25 MI N/ Mclellan
RouteCounty Highway 0
StateArizona
Coordinates33.44814, -111.85671
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.6 US tons
Inventory rating47.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckOther
Main spans7
Design loadHS 20
Structure length410 ft (125 m)
Longest span59 ft (18 m)
Deck width84 ft (25.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,894 (2020)
Projected traffic11,904 by 2040
Trucks15%
Lanes on structure4
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Alma School RD over Salt River(s.Channel) built?

It was built in 1980, making it 45 years old in 2025.

What condition is Alma School RD over Salt River(s.Channel) 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 October 2023.

How much traffic does Alma School RD over Salt River(s.Channel) carry?

About 11,894 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Alma School RD over Salt River(s.Channel)?

The structure is 410 ft (125 m) long with a longest span of 59 ft (18 m) and a deck 84 ft wide.

Who owns Alma School RD over Salt River(s.Channel)?

It is owned by the County Highway Agency.