US Bridges

North Alvernon Way over Diversion Channel

Good

Pima County, Arizona · N.Alvernon Way and Div Ch · Structure no. 09810

Built
1984
41 years old
Condition
Good
inspected January 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
8,752
2022 count
Owner
County
County Highway Agency

About this bridge

North Alvernon Way over Diversion Channel is a prestressed concrete box beam or girders - multiple carrying North Alvernon Way over Diversion Channel in Pima County, Arizona. It was built in 1984, so it is 41 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 8,752 vehicles a day, roughly 5% of them trucks, projected to reach 8,762 by 2042. The structure is 103 ft (31.4 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesNorth Alvernon Way
CrossesDiversion Channel
LocationN.Alvernon Way and Div Ch
RouteCounty Highway 0
CountyPima County
StateArizona
Coordinates32.19446, -110.90928
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating105.1 US tons
Inventory rating61 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span100 ft (30.5 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,752 (2022)
Projected traffic8,762 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was North Alvernon Way over Diversion Channel built?

It was built in 1984, making it 41 years old in 2025.

What condition is North Alvernon Way over Diversion 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 January 2023.

How much traffic does North Alvernon Way over Diversion Channel carry?

About 8,752 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is North Alvernon Way over Diversion Channel?

The structure is 103 ft (31.4 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.

Who owns North Alvernon Way over Diversion Channel?

It is owned by the County Highway Agency.