US Bridges

Central Avenue over Salt River

Fair

Maricopa County, Arizona · 1.0 MI N of Broadway RD · Structure no. 09324

Built
1975
50 years old
Condition
Fair
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
904 ft
9 main spans
Daily traffic
21,814
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Central Avenue over Salt River is a prestressed concrete continuous stringer/multi-beam or girder carrying Central Avenue over Salt River in Maricopa County, Arizona. It was built in 1975, so it is 50 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 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 21,814 vehicles a day, roughly 5% of them trucks, projected to reach 21,824 by 2041. The structure is 904 ft (275.6 m) long and 81 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesCentral Avenue
CrossesSalt River
Location1.0 MI N of Broadway RD
RouteCity Street 0
StateArizona
Coordinates33.4208, -112.0733
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.5 US tons
Inventory rating48.8 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length904 ft (275.6 m)
Longest span100 ft (30.5 m)
Deck width81 ft (24.7 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,814 (2021)
Projected traffic21,824 by 2041
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Central Avenue over Salt River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Central Avenue over Salt River 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 2022.

How much traffic does Central Avenue over Salt River carry?

About 21,814 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Central Avenue over Salt River?

The structure is 904 ft (275.6 m) long with a longest span of 100 ft (30.5 m) and a deck 81 ft wide.

Who owns Central Avenue over Salt River?

It is owned by the City or Municipal Highway Agency.