About 100 dead trees deemed to be hazardous to motorists along U.S. Highway 20 and state Highway 126 near Sisters will be cut down by the Oregon Department of Transportation starting Monday, an operation that is expected to cause delays for travelers heading west of Sisters.

The work, expected to wrap up by May 6, could cause delays of around 20 minutes between 7 a.m. and 3:30 p.m.

ODOT flaggers and pilot cars will guide traffic through the tree-removal work zones. Work begins west of Sisters near the Highway 20 and Highway 126 junctions and will end around Suttle Lake. TripCheck.com shows specific work zone locations.

ODOT removes trees when they present an immediate or near future risk to the road or utilities. The hazardous trees are identified and evaluated by ODOT prior to removal.