SR Loop 101
SR Loop 101 in 6 MI N Of JCT 101 & 202, Maricopa County, Arizona received a condition grade of A (81/100). Built in 1991, the bridge carries 167K vehicles daily on SR Loop 101 over Mcdonald Drive.
SR Loop 101 carries an A on the BridgeSafety Condition Score with 81/100. Deck, superstructure, and substructure ratings all sit in the better tier of the FHWA NBI distribution. The bridge is structurally sound by federal standards.
The bridge was built in 1991, making it 35 years old — past the early-life period but still well within typical service life. Routine inspections and modest repair work are normal for bridges in this age band. SR Loop 101 carries an average daily traffic count of 167,016 vehicles, with 10 lane(s) crossing Mcdonald Drive. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
Component Ratings
The riding surface, evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
SR Loop 101 is a 35-year-old bridge located 6 MI N Of JCT 101 & 202 in Maricopa County, Arizona. The bridge carries SR Loop 101 over Mcdonald Drive with 10 traffic lanes, handling approximately 167K vehicles per day. Built in 1991 and reconstructed in 2015, the structure spans 51.2 meters.
The bridge received a Condition Grade of A (81/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 8/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
SR Loop 101 has a Condition Score of 81/100 (Grade A). Its deck is rated 7/9, superstructure 8/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
SR Loop 101 was built in 1991 and reconstructed in 2015, making it 35 years old. The average bridge age in the United States is 48 years.
SR Loop 101 carries approximately 167K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 51.2 meters long and located on SR Loop 101 in 6 MI N Of JCT 101 & 202, Maricopa County, Arizona.
No, SR Loop 101 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
SR Loop 101 is located 6 MI N Of JCT 101 & 202 in Maricopa County, Arizona. The bridge carries SR Loop 101 over Mcdonald Drive. Its coordinates are 33.524100, -111.887400. It is maintained by State Highway Agency.
SR Loop 101 carries SR Loop 101 over Mcdonald Drive. The bridge is 51.2 meters long and was built in 1991, with reconstruction in 2015.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.