Photo: Waltham Police Officer Paul Tracey (City of Waltham website)

Due to the large number of people and police departments expected to attend services for Waltham Police Officer Paul Tracey, who was killed last week, the Belmont Police Department is advising residents and commuters to avoid Trapelo Road heading towards Waltham on Thursday and Friday, Dec. 14 and 15.

The wake and funeral mass will occur at Our Lady Comforter of the Afflicted Church, 920 Trapelo Rd. in Waltham. The wake is scheduled from 3 p.m. to 8 p.m. on Thursday, the funeral services will begin at 10 a.m. on Friday. The burial will occur around 1 p.m. at Mount Feake Cemetery in southwest Waltham.

Waltham plans to close Trapelo Road for most of the day on Thursday and Friday to accommodate traffic to the church as thousands of uniformed officers from across the region, and country will come to Waltham to remember Tracey with his family and friends.

Tracey and National Grid employee Roderick Jackson were killed when a pickup driven by Peter Simon of Woodsville, NH crashed into them at a work site on Totten Pond Road, Dec. 6.