US Bridges

51st Ave over Offsite Channel

Good

Maricopa County, Arizona · S of 202L South Mtn Fwy · Structure no. 07352

Built
2019
6 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete Continuous
Length
20 ft
2 main spans
Daily traffic
1,000
2020 count
Owner
State
State Highway Agency

About this bridge

51st Ave over Offsite Channel is a concrete continuous culvert carrying 51st Ave over Offsite Channel in Maricopa County, Arizona. It was built in 2019, so it is 6 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 1,000 vehicles a day, roughly 5% of them trucks, projected to reach 1,010 by 2040. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries51st Ave
CrossesOffsite Channel
LocationS of 202L South Mtn Fwy
RouteState Highway 202
CountyMaricopa County
StateArizona
Coordinates33.3279, -112.1692
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length20 ft (6.1 m)
Longest span5 ft (1.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2020)
Projected traffic1,010 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 51st Ave over Offsite Channel built?

It was built in 2019, making it 6 years old in 2025.

What condition is 51st Ave over Offsite Channel 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 November 2024.

How much traffic does 51st Ave over Offsite Channel carry?

About 1,000 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is 51st Ave over Offsite Channel?

The structure is 20 ft (6.1 m) long with a longest span of 5 ft (1.5 m).

Who owns 51st Ave over Offsite Channel?

It is owned by the State Highway Agency.