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Staff Report Assessment Considerations for Mustang Drive Pavement Rehabilitation and Drainage Improvements Projects To: City of Mounds View – Honorable Mayor and City Council Members From: Cristina Mlejnek December 30, 2014 Background: Mustang Drive/Mustang Circle is a dead-end local municipal street segment located off Old Highway 8 in the southernmost part of Mounds View. This street segment serves eleven industrial and commercial properties in the Mounds View Industrial Parks No. 1-3 and Midway Industrial plat additions. Many of these properties have large numbers of semi- truck traffic entering and exiting Mustang Drive/Circle and include freight distribution centers. Maintaining access to and limiting interruptions for these properties during construction is important and may require a phased approach. Pavement Improvements Mustang Drive is approximately 1,550 feet in length and Mustang Circle is approximately 610 feet in length with a 135-foot diameter cul-de-sac. Both segments have concrete curb and gutter (Mn/DOT Design 8618) with a bituminous pavement surface measuring 36-feet wide (lip-to-lip of gutter). Mustang Drive was originally constructed in 1974 and Mustang Circle in 1979. Maintenance includes a seal coat in 1994 and pothole patching and skim coating. The current pavement is in poor condition with significant surface patching, potholes, and moderate to high severity traverse cracking. Curb and gutter is in fair to good condition. In late 2011, American Engineering Testing, Inc. (AET) performed geotechnical and pavement evaluation services on behalf of the City for Mustang Drive/Circle. AET's ten pavement cores showed bituminous pavement thickness ranging from 4.25 to 7.5 inches and found stripping at multiple layer interfaces. AET recommended a pavement rehabilitation design (10-ton, 20-year ESAL of 2,000,000) as follows: 1. Mill bituminous surface to a depth of 3 inches; 2. Perform stabilized full depth reclamation to a depth of 6 inches asphalt/aggregate base; 3. Place 3.5 inches of bituminous wearing course in 2 lifts (Mix SPWEB440F). AET provided an alternative design option for Mustang Circle due to its better condition than Mustang Drive: 1. Mill bituminous surface to a depth of 3 inches; 2. Place 3 inches of bituminous wearing course in 2 lifts. There may be some sections of curb and gutter needing replacement or correction, however, the majority of curb and gutter is expected to remain undisturbed.