US Bridges

Loop 101 over Skunk Creek

Fair

Maricopa County, Arizona · 2.27 MI N of JCT US 60 · Structure no. 02040

Built
1989
36 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
491 ft
4 main spans
Daily traffic
113,696
2021 count
Owner
State
State Highway Agency

About this bridge

Loop 101 over Skunk Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Loop 101 over Skunk Creek in Maricopa County, Arizona. It was built in 1989, so it is 36 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 113,696 vehicles a day, roughly 7% of them trucks, projected to reach 113,706 by 2041. The structure is 491 ft (149.7 m) long and 145 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLoop 101
CrossesSkunk Creek
Location2.27 MI N of JCT US 60
RouteState Highway 101
CountyMaricopa County
StateArizona
Coordinates33.6205, -112.2395
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length491 ft (149.7 m)
Longest span121 ft (36.9 m)
Deck width145 ft (44.3 m)
Roadway width139 ft (42.5 m)
Vertical clearance over deck30 ft (9.1 m)

Traffic and service

Average daily traffic113,696 (2021)
Projected traffic113,706 by 2041
Trucks7%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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 Loop 101 over Skunk Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Loop 101 over Skunk Creek 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 April 2023.

How much traffic does Loop 101 over Skunk Creek carry?

About 113,696 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Loop 101 over Skunk Creek?

The structure is 491 ft (149.7 m) long with a longest span of 121 ft (36.9 m) and a deck 145 ft wide.

Who owns Loop 101 over Skunk Creek?

It is owned by the State Highway Agency.