General, masonry, earth construction: Busy crews fill alley with construction activity. Two workers in ight foreground are stretching string for place masonry around manhole. Worker in left foreground is sawing material, probably for formwork, for concrete/ masonry using portable diamond blade rotary saw. Crew in background with Caterpillar backhoe is coarse grading the gravel base for paving. Beyond backhoe is Caterpillar backhoe/loader parked across alley entrance from Liberty Street. Alley between Washington and Liberty, 1/2 block West of Main, Ann Arbor, Michigan, 2005.