Harnham Bridge

Built in 1244–45 by Bishop Robert Bingham of Salisbury, the bridge served to improve access to the city from the south, replacing unreliable fords across the River Avon. It was originally named Ayleswade Bridge (sometimes Ayleswater Bridge); this medieval structure consisted of two separate stone spans: six arches on the southern side of an island, and three arches on the northern side.

Atop the small island between the river branches stood a Chapel of St John the Baptist, built in tandem with the bridge, and the nearby St Nicholas’ Hospital was entrusted with its upkeep. St Nicholas Hospital can be seen on the far right side of the bridge. 

The bridge was commonly referred to as "the greater bridge" of Salisbury, as it drew traffic from the west, replacing the older route via Fisherton Bridge. Over the centuries, responsibility for its upkeep was a recurring issue. The hospital, local citizens, and even the Crown were engaged in disputes and grants to fund repairs. For example, in 1413 a royal toll on merchandise was granted for seven years to support maintenance.

By the 16th or 17th century, the bridge was widened and encased within an outer ashlar stone casing, although much of the original medieval structure remains visible within.

In 1774, both spans of the bridge were widened to accommodate increased traffic, extending both the north and south sections. 

A new road bridge was built just a few yards east in 1933, diverting major traffic away. The old bridge remains in service for local access and foot traffic.

Harnham Bridge is Grade I listed, signifying its exceptional architectural and historic importance. It was officially listed on 28 February 1952. It is also preserved as a Scheduled Monument, underlining its national archaeological and heritage significance.

Interestingly "Alyeswade Bridge" is a bit of a nonsense name as Alyeswade translates to something like Aegels Ford. Aegel was, presumably, a local nobleman and before the bridge was built there was a ford at this spot.