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    Mill Run Bridge Project in Blair County

    Detour of Route 36 (Union Avenue) for Mill Run Bridge Project in Altoona, Blair County, to begin June 23

    June 20, 2025

    The Pennsylvania Department of Transportation (PennDOT) is informing motorists of a planned detour for Route 36 (Union Avenue) for the Mill Run bridge project in Altoona, Blair County, beginning Monday, June 23, 2025.     

    Contractor will be implementing a detour of Route 36 (Union Avenue), closing the street from Baker Boulevard to 30th Street, including the intersections with Crescent Road and 31st Street, from Monday, June 23, to October 2025.

    The 2.2-mile detour will use Route 1001 (East Plank Road), Route 4003 (Logan Boulevard), Route 764 (6th or 7th avenues). South of the bridge, businesses along Union Avenue will be accessible from Plank Road to East Ward Avenue with local traffic accessible to Baker Boulevard. North of the bridge, local traffic will be accessible to 30th Street. The detour includes a pedestrian detour using 30th Street, 5th Avenue, Crescent Road, Oak Lane and Baker Boulevard. 

     View Route 36 Mill Run Bridge Map (PDF).

    The work is part of the Mill Run bridge project, slated to be completed during the 2025 construction season. Cottle’s Asphalt Maintenance, Inc., of Everett, PA, is the contractor for the $7,434,773.35 project, which includes the replacement of the bridge, installation of a left-turn lane from Route 36 onto 31st Street (City Street), improved drainage, and guide rail upgrades over 4.218 miles of roadway.   

    As always, PennDOT stresses extra caution in all work zones. Motorists should drive slowly, eliminate all distractions, and stay alert for direction from advanced signage. 

    Additionally, PennDOT reminds motorists that as of June 5, 2025, the "Paul Miller's Law" is in effect. This law prohibits the use of hand-held devices while driving, even while stopped temporarily due to traffic, a red light, or other momentary delay. Violation of this law is punishable by way of summary citations issued by any Pennsylvania Law Enforcement officer. We strongly urge motorists to make safe choices, put phones out of reach and don’t text and drive.   

    Motorists can check conditions on major roadways by visiting www.511PA.com. 511PA, which is free and available 24 hours a day, provides traffic delay warnings, weather forecasts, traffic speed information and access to more than 1,000 traffic cameras. 511PA is also available through a smartphone application for iPhone and Android devices, by calling 5-1-1, or by following regional X alerts.        

    Subscribe to PennDOT news and traffic alerts in Bedford, Blair, Cambria, Fulton, Huntingdon, and Somerset counties at www.penndot.pa.gov/District9.     

    Follow PennDOT District 9 on X and like the department on Facebook and Instagram.