US Bridges

Northern Avenue over Diagonal Channel

Good

Mohave County, Arizona · 0.2 MI W JCT Cstle Rck RD · Structure no. 10693

Built
2004
21 years old
Condition
Good
inspected September 2021
Type
Culvert
Concrete Continuous
Length
61 ft
4 main spans
Daily traffic
6,612
2017 count
Owner
County
County Highway Agency

About this bridge

Northern Avenue over Diagonal Channel is a concrete continuous culvert carrying Northern Avenue over Diagonal Channel in Mohave County, Arizona. It was built in 2004, so it is 21 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,612 vehicles a day, roughly 10% of them trucks, projected to reach 6,622 by 2037. The structure is 61 ft (18.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNorthern Avenue
CrossesDiagonal Channel
Location0.2 MI W JCT Cstle Rck RD
RouteCounty Highway 0
StateArizona
Coordinates35.2539, -113.9967
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.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length61 ft (18.6 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,612 (2017)
Projected traffic6,622 by 2037
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
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 Northern Avenue over Diagonal Channel built?

It was built in 2004, making it 21 years old in 2025.

What condition is Northern Avenue over Diagonal 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 September 2021.

How much traffic does Northern Avenue over Diagonal Channel carry?

About 6,612 vehicles per day (2017 count), of which roughly 10% are trucks.

How long is Northern Avenue over Diagonal Channel?

The structure is 61 ft (18.6 m) long with a longest span of 10 ft (3 m).

Who owns Northern Avenue over Diagonal Channel?

It is owned by the County Highway Agency.