Before the 16th … The first of these was the Severn Bridge, a suspension bridge located south of Chepstow that opened in 1966. The River Severn (Welsh: Afon Hafren), at 220 miles (354 km) long, is the longest river in Great Britain. There are 104 bridges crossing the River Severn from the source in Plynlimon to the sea of the Bristol Channel, all can be viewed here.
History of Estuary Crossings.

Early man regarded the River Severn as a defence against the enemy on the other side, therefore he didn't find it necessary to cross the river that often. There are other road bridges, railway bridges, footbridges, farm bridges, toll bridges and aqueducts. It rises near the River Wye on the northeastern slopes of Plynlimon, Wales, and flows southward to … The two bridges see 25 million journeys across the Severn every year.

River Severn, Britain’s longest river from source to tidal waters—about 180 miles (290 km) long, with the Severn estuary adding some 40 miles (64 km) to its total length. The Severn has historically been a very important and busy river, and has been bridged throughout history. The River Severn. The Old Chepstow Bridge – The Chepstow Museum holds various prints of older bridges that had spanned the river at this point.

Throughout recorded history, until well into the Industrial Revolution, the most efficient method of transporting heavy goods was by river and coastal water.

The River Severn is bridged in lots of places. It is also the river with the most voluminous flow of water by far in all of England and Wales, discharging an average of 107 m 3 /s (3,800 cu ft/s) into the Celtic Sea at Apperley, Gloucestershire. The Severn Crossing is actually two separate crossings formed by bridges that span the River Severn, connecting Gloucestershire in England and Monmouthshire in Wales. The removal of the fee, which was £5.60 for a car, on the M4 and M48 bridges between south-west England and …

This is a list of crossings of the River Severn in Great Britain (including bridges, tunnels, ferries and fords), in order from source to mouth..
Two of the bridges, the Severn Bridge and the Second Severn Crossing, link Wales and England by road.