Answer: widens

AnswerCrossword Clue
WIDENSEnlarges.
widensto make or become wide or wider; broaden; expand
widensWIDEN, to make wide (extending far)
WIDENSReams out, e.g.
WIDENSReams
WIDENSAdds a lane
WIDENSExpands horizontally
WIDENSIncreases in capacity
WIDENSReams out
WIDENSReams.
WIDENSExpands.
WIDENSDoes some roadwork
WIDENSBroadens.
WIDENSExtends.
WIDENSAdds a lane to
WIDENSBroadens
WIDENSExpands
WIDENSImproves the highway, perhaps
WIDENSAntonym of tapers
WIDENSGrows amidships
WIDENSDilates