There will be construction work starting Wednesday on River Road in The Dalles within the vicinity of River Trail Way.  Crestline Construction and the City of The Dalles says traffic will be flagged to one lane for approximately a week, through January 24.  Lanes will open back up during nighttime hours, with steel plates in the roadway.  Meanwhile the Port of Hood River says there will be intermittent, single-lane closures of the Hood River/White Salmon Interstate Bridge on Wednesday from 9:00 a.m. to 3:00 p.m. as Port crews work to replace roadway signs on the bridge.  The rolling closures will typically be 15 minutes in duration.  Bridge users should expect 20-30 minute delays, depending on traffic volume.  Flaggers will direct traffic on the bridge.