US Bridges

West-South Ramp over I 17; 101L; 27th Ramp C

Fair

Maricopa County, Arizona · 4th Level Center of Ti · Structure no. 02169

Built
1997
28 years old, rebuilt 1999
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
1,735 ft
10 main spans
Daily traffic
12,883
2020 count
Owner
State
State Highway Agency

About this bridge

West-South Ramp over I 17; 101L; 27th Ramp C is a prestressed concrete continuous box beam or girders - single or spread carrying West-South Ramp over I 17; 101L; 27th Ramp C in Maricopa County, Arizona. It was built in 1997 and reconstructed in 1999, so it is 28 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 12,883 vehicles a day, roughly 7% of them trucks, projected to reach 12,893 by 2040. The structure is 1,735 ft (528.8 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesWest-South Ramp
CrossesI 17; 101L; 27th Ramp C
Location4th Level Center of Ti
RouteInterstate 17
CountyMaricopa County
StateArizona
Coordinates33.6692, -112.1096
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.
Superstructure7 GoodSome minor problems.
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating45 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length1,735 ft (528.8 m)
Longest span190 ft (57.9 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,883 (2020)
Projected traffic12,893 by 2040
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesFourth level (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 West-South Ramp over I 17; 101L; 27th Ramp C built?

It was built in 1997, making it 28 years old in 2025. It was reconstructed in 1999.

What condition is West-South Ramp over I 17; 101L; 27th Ramp C 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 West-South Ramp over I 17; 101L; 27th Ramp C carry?

About 12,883 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is West-South Ramp over I 17; 101L; 27th Ramp C?

The structure is 1,735 ft (528.8 m) long with a longest span of 190 ft (57.9 m) and a deck 39 ft wide.

Who owns West-South Ramp over I 17; 101L; 27th Ramp C?

It is owned by the State Highway Agency.