Resurfacing of the shoulder of the Capital Beltway's eastbound lanes in Montgomery County caused major delays in morning traffic yesterday between Connecticut Avenue and Rockville Pike, state police reported.

Construction crews will move east today to the section of the Beltway from Colesville Road to New Hampshire Avenue.

Highway officials estimated the repairs, which began last week, will be completed in about 10 days.

The righthand lane of the inner loop will be closed to traffic during the resurfacing; work begins at 9 a.m. and ends at 3:30 p.m., officials said.

Yesterday, cars were backed up on Connecticut Avenue about three miles south to Bradley Boulevard in Bethesda and on the Beltway from I-270 to Old Georgetown Road, police reported.

Traffic was further snarled to the east when at about noon an empty oil tanker jackknifed across four lanes on the Beltway between Georgia Avenue and Colesville Road, striking a construction worker and a van. There were no serious injuries, police said.

According to Trooper Johnny Fortune, the tractor-trailer sideswipped a vehicle holding flashing traffic arrows, knocking that vehicle into the worker. The trailer slid across four lanes of traffic and struck a van, he said.

Police said the worker, Dennis Eugene Edwards, 27, of Mechanicsville, Md., was taken to Holy Cross Hospital for X-rays.