US Bridges

Signal Butte RD over Powerline Fldway Channel

Good

Maricopa County, Arizona · 300 Ft S JCT Ray RD · Structure no. 11329

Built
2014
11 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
2,510
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Signal Butte RD over Powerline Fldway Channel is a prestressed concrete box beam or girders - multiple carrying Signal Butte RD over Powerline Fldway Channel in Maricopa County, Arizona. It was built in 2014, so it is 11 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 2,510 vehicles a day, roughly 5% of them trucks, projected to reach 2,520 by 2042. The structure is 39 ft (11.9 m) long and 112 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSignal Butte RD
CrossesPowerline Fldway Channel
Location300 Ft S JCT Ray RD
RouteCity Street 0
StateArizona
Coordinates33.321, -111.6007
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length39 ft (11.9 m)
Longest span36 ft (11 m)
Deck width112 ft (34.1 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,510 (2023)
Projected traffic2,520 by 2042
Trucks5%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Signal Butte RD over Powerline Fldway Channel built?

It was built in 2014, making it 11 years old in 2025.

What condition is Signal Butte RD over Powerline Fldway 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 October 2023.

How much traffic does Signal Butte RD over Powerline Fldway Channel carry?

About 2,510 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Signal Butte RD over Powerline Fldway Channel?

The structure is 39 ft (11.9 m) long with a longest span of 36 ft (11 m) and a deck 112 ft wide.

Who owns Signal Butte RD over Powerline Fldway Channel?

It is owned by the City or Municipal Highway Agency.