Motorists should prepare for renewed traffic management measures and overnight shutdowns as renovation efforts commence on the M48 Severn Bridge.
The government-owned highways operator has revealed a programme of improvement and repair initiatives on the span linking the two nations, forming part of a strategy to eventually permit heavy goods vehicles to resume using the crossing.
The work encompasses establishing support structures and conduits for traffic signalling equipment, vehicle identification cameras, and vehicle weight assessment facilities intended to preserve the infrastructure.
Routine servicing will additionally be undertaken throughout the closure phases.
Beginning Wednesday, October 14 and continuing through Friday, October 16, the first lane and emergency shoulder along the England-bound direction of the M48 will be shut between 9:30 in the morning and 6 in the evening.
Wales-bound traffic faces comparable limitations this week between 5 in the morning and 3 in the afternoon, with lane one and the hard shoulder likewise rendered unavailable.
Supplementary traffic management impacts the entry slip road at junction one, where only a solitary lane continues to function.
Constraints also extend to the A403 roundabout and the northbound A403 leading toward the M48 interchange.
The England-bound cycling lane and pedestrian walkway will stay inaccessible until 6 on Saturday morning, October 17.
Additional daytime limitations are arranged for the period commencing Monday, October 19 through Friday, October 23, encompassing restrictions on the Wales-bound junction one entry slip road and the A403 and M48 interchange.
Lane one and the hard shoulder along the England-bound carriageway will similarly be shut between 9:30 in the morning and 6 in the evening across this span.
The most substantial interference will commence on the Tuesday evening of October 20, when the England-bound carriageway will be entirely impassable between junction two and junction one between 8 in the evening and 6 in the morning.
National Highways noted that the M48 Severn Bridge possesses a substantially more constricted roadway than a conventional motorway, providing diminished space for crews to conduct maintenance activities securely.
The scheduled works are unconnected to limitations enacted because of elevated winds.
The M48 remains inaccessible to traffic whenever wind gusts surpassing 40 knots, approximately 46 miles per hour, are anticipated.
At 70 knots, roughly 80 miles per hour, both Severn crossings are sealed to all traffic.
The M4 Prince of Wales Bridge experiences reduced susceptibility to wind owing to its barriers, which mitigate the effect of forceful gusts.
Both the M48 Severn Bridge and the M4 crossing stayed accessible on Tuesday evening despite projections of progressively blustery weather.
National Highways verified that the closures currently arranged pertain to maintenance works and not unfavourable meteorological circumstances.