Christian & Missionary Alliance Church 2510 Old Washington Rd, Upper St Clair, PA15241 The Christian & Missionary Alliance Church is very close to Route 19 along Old Washington Road. The church offers…More Sunday school at 10:45 a.m. and a Sunday service at 11 a.m. every week. The service is described as contemporary and blended with a few hymns. Child care is available during Sunday school and the worship service with qualified workers. A number of study groups and programs are also available for the congregation. Groups are targeted to all ages, from middle school children to adults.