US Bridges

51st Avenue over Salt River

Fair

Maricopa County, Arizona · 0.2 MI N of Broadway RD · Structure no. 10226

Built
2000
25 years old
Condition
Fair
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,597 ft
13 main spans
Daily traffic
30,601
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

51st Avenue over Salt River is a prestressed concrete continuous stringer/multi-beam or girder carrying 51st Avenue over Salt River in Maricopa County, Arizona. It was built in 2000, so it is 25 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 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 30,601 vehicles a day, roughly 1% of them trucks, projected to reach 30,611 by 2041. The structure is 1,597 ft (486.7 m) long and 95 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries51st Avenue
CrossesSalt River
Location0.2 MI N of Broadway RD
RouteCity Street 0
StateArizona
Coordinates33.4044, -112.1685
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.4 US tons
Inventory rating45.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans13
Design loadHS 20
Structure length1,597 ft (486.7 m)
Longest span123 ft (37.5 m)
Deck width95 ft (29 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,601 (2021)
Projected traffic30,611 by 2041
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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 51st Avenue over Salt River built?

It was built in 2000, making it 25 years old in 2025.

What condition is 51st 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 51st Avenue over Salt River carry?

About 30,601 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is 51st Avenue over Salt River?

The structure is 1,597 ft (486.7 m) long with a longest span of 123 ft (37.5 m) and a deck 95 ft wide.

Who owns 51st Avenue over Salt River?

It is owned by the City or Municipal Highway Agency.