An end of the deadlock could be near now that Lamont and Democratic majority leaders have united behind a truck-only tolls plan, provided House and Senate Democrats can muster enough votes to approve highway charges on commercial trucks. Legislators are eager to get a bonding bill done. Towns and cities are, too, because the holdup is delaying bond-funded state grants. State bonding also supports community, housing and economic development assistance. Under Lamont, the bond commission has approved $876.5 million in general obligation bonds this calendar year, including $301 million for school construction projects.