40th Street
40th Street in 2.7 MI E Of JCT I 10, Maricopa County, Arizona received a condition grade of F (0/100). Built in 1989, the bridge carries 146K vehicles daily on 40th Street over E Papago Drain. It is classified as structurally deficient.
40th Street carries an F on the BridgeSafety Condition Score with 0/100 — the bottom tier of the FHWA NBI distribution. Component ratings flag the structure for near-term rehabilitation or replacement; the bridge may remain open to traffic but is on the priority list for action.
The bridge was built in 1989, making it 37 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. 40th Street carries an average daily traffic count of 145,602 vehicles, with 6 lane(s) crossing E Papago Drain. 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
40th Street is a 37-year-old bridge located 2.7 MI E Of JCT I 10 in Maricopa County, Arizona. The bridge carries 40th Street over E Papago Drain with 6 traffic lanes, handling approximately 146K vehicles per day. Built in 1989, the structure spans 6.4 meters.
The bridge received a Condition Grade of F (0/100) based on Federal Highway Administration inspection data. Its deck is rated 0/9 (serious), superstructure 0/9 (serious), and substructure 0/9 (serious). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below, this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
40th Street has a Condition Score of 0/100 (Grade F). Its deck is rated 0/9, superstructure 0/9, and substructure 0/9 on the NBI scale. The bridge is classified as structurally deficient.
40th Street was built in 1989, making it 37 years old. The average bridge age in the United States is 48 years.
40th Street carries approximately 146K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 6.4 meters long and located on 40th Street in 2.7 MI E Of JCT I 10, Maricopa County, Arizona.
Yes, 40th Street is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
40th Street is located 2.7 MI E Of JCT I 10 in Maricopa County, Arizona. The bridge carries 40th Street over E Papago Drain. Its coordinates are 33.460000, -111.995200. It is maintained by State Highway Agency.
40th Street carries 40th Street over E Papago Drain. The bridge is 6.4 meters long and was built in 1989.
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.