US Bridges

WB 10 over I 17 SB FR M3 Ramp

Good

Maricopa County, Arizona · At I 17 · Structure no. 01941

Built
1988
37 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
896 ft
4 main spans
Daily traffic
29,568
2022 count
Owner
State
State Highway Agency

About this bridge

WB 10 over I 17 SB FR M3 Ramp is a steel continuous stringer/multi-beam or girder carrying WB 10 over I 17 SB FR M3 Ramp in Maricopa County, Arizona. It was built in 1988, so it is 37 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 29,568 vehicles a day, roughly 10% of them trucks, projected to reach 29,578 by 2042. The structure is 896 ft (273.1 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesWB 10
CrossesI 17 SB FR M3 Ramp
LocationAt I 17
RouteInterstate 10
StateArizona
Coordinates33.4603, -112.1077
Functional classUrban Principal Arterial - Interstate

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.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length896 ft (273.1 m)
Longest span252 ft (76.8 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deck16 ft (5 m)

Traffic and service

Average daily traffic29,568 (2022)
Projected traffic29,578 by 2042
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was WB 10 over I 17 SB FR M3 Ramp built?

It was built in 1988, making it 37 years old in 2025.

What condition is WB 10 over I 17 SB FR M3 Ramp 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 2024.

How much traffic does WB 10 over I 17 SB FR M3 Ramp carry?

About 29,568 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is WB 10 over I 17 SB FR M3 Ramp?

The structure is 896 ft (273.1 m) long with a longest span of 252 ft (76.8 m) and a deck 39 ft wide.

Who owns WB 10 over I 17 SB FR M3 Ramp?

It is owned by the State Highway Agency.