Walsh Construction, working on the Alameda Corridor-East Construction Authority (ACE) project, will close Walnut Grove Avenue at the railroad crossing to lower the roadway, rebuild railroad signals, and install new track. No vehicular traffic will be allowed. Pedestrian access will be allowed except between March 6th to March 10th. San Gabriel Boulevard will be designated as a detour (see map). Motorists and pedestrians are urged to exercise caution in this area. Most work will occur between 7 a.m. and 4 p.m. For more information, you may call the ACE Project Hotline at (888) ACE-1426 (Available 24/7) or the San Gabriel Public Works Department at (626) 308-2825.