Answer: widened

AnswerCrossword Clue
WIDENEDImproved, as a highway
WIDENEDIncreased in breadth
WIDENEDLet out
WIDENEDBroadened
WIDENEDMade broader
WIDENEDAdded a lane to
WIDENEDEnlarged.
WIDENEDAmplified
WIDENEDDiversified
WIDENEDLike some highways after construction work
WIDENEDDilated
WIDENEDReamed out
widenedMake or become wider
widenedWIDEN, to make wide (extending far)