US Bridges

S I 17 to W 101L over North Fontage RD

Fair

Maricopa County, Arizona · N/W Corner of 101/I 17 Ti · Structure no. 02172

Built
1999
26 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
562 ft
4 main spans
Daily traffic
12,581
2019 count
Owner
State
State Highway Agency

About this bridge

S I 17 to W 101L over North Fontage RD is a prestressed concrete continuous box beam or girders - single or spread carrying S I 17 to W 101L over North Fontage RD in Maricopa County, Arizona. It was built in 1999, so it is 26 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 12,581 vehicles a day, roughly 4% of them trucks, projected to reach 12,591 by 2039. The structure is 562 ft (171.3 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS I 17 to W 101L
CrossesNorth Fontage RD
LocationN/W Corner of 101/I 17 Ti
RouteInterstate 17
StateArizona
Coordinates33.6704, -112.1146
Functional classUrban Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating39 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length562 ft (171.3 m)
Longest span175 ft (53.3 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,581 (2019)
Projected traffic12,591 by 2039
Trucks4%
Lanes on structure1
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 NetworkInterstate 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 S I 17 to W 101L over North Fontage RD built?

It was built in 1999, making it 26 years old in 2025.

What condition is S I 17 to W 101L over North Fontage RD 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 June 2024.

How much traffic does S I 17 to W 101L over North Fontage RD carry?

About 12,581 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is S I 17 to W 101L over North Fontage RD?

The structure is 562 ft (171.3 m) long with a longest span of 175 ft (53.3 m) and a deck 31 ft wide.

Who owns S I 17 to W 101L over North Fontage RD?

It is owned by the State Highway Agency.