US Bridges

91st Avenue over Papago Drain Channel

Fair

Maricopa County, Arizona · 0.1 MI North of JCT I 10 · Structure no. 01821

Built
1984
41 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
88 ft
1 main span
Daily traffic
20,400
2022 count
Owner
State
State Highway Agency

About this bridge

91st Avenue over Papago Drain Channel is a prestressed concrete stringer/multi-beam or girder carrying 91st Avenue over Papago Drain Channel in Maricopa 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 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 20,400 vehicles a day, roughly 7% of them trucks, projected to reach 20,410 by 2042. The structure is 88 ft (26.8 m) long and 97 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries91st Avenue
CrossesPapago Drain Channel
Location0.1 MI North of JCT I 10
RouteState Highway 10
CountyMaricopa County
StateArizona
Coordinates33.46339, -112.25525
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length88 ft (26.8 m)
Longest span85 ft (25.9 m)
Deck width97 ft (29.5 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deck19 ft (5.6 m)

Traffic and service

Average daily traffic20,400 (2022)
Projected traffic20,410 by 2042
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 91st Avenue over Papago Drain Channel built?

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

What condition is 91st Avenue over Papago Drain Channel 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 March 2023.

How much traffic does 91st Avenue over Papago Drain Channel carry?

About 20,400 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is 91st Avenue over Papago Drain Channel?

The structure is 88 ft (26.8 m) long with a longest span of 85 ft (25.9 m) and a deck 97 ft wide.

Who owns 91st Avenue over Papago Drain Channel?

It is owned by the State Highway Agency.