After the lift bridge was damaged, it was decided to replace it with a high level bridge. The bridge design was a tied arch with the deck suspended under the arch by steel beams. Since the bridge was 133 feet above the water and the ground was only slightly above sea level, the bridge required 41 steel girder approach spans. The new bridge opened in 1942.
While the goal of the new Saint Georges Bridge was to make the bridge wide enough to keep the piers out of the canal, Congress authorized a project in 1954 to widened the canal to 450 feet. This project was started in the 1960s and finished in the mid-1970s. As a result, the main span piers for the Saint Georges Bridge are again standing in the canal.
As traffic increased over the years, the Saint Georges Bridge became a bottleneck, especially on weekends with traffic heading to the beaches. Eventually the deck deteriorated to the point where truck traffic had to be prohibited. Trucks were routed to the nearby Summit Bridge. The Delaware DOT had for years been trying to get an Interstate highway built between Wilmington and Dover, but they were unsuccessful in getting the project approved. The state decided to build the highway on their own. Known as DE-1, it features a large cabled stayed structure located just west of the Saint Georges Bridge.
When the new C&D Canal Bridge, now known as the Roth Bridge, opened in 1995, the plan was to move US-13 traffic to the new bridge, and then demolish the old bridge. Local opposition prevented the Saint Georges Bridge from being dismantled. Instead, Delaware DOT refurbished the Saint Georges Bridge between 1998 and 2001. Deteriorating steel was replaced and a new concrete deck was installed.
Problems were again found on the structure of the Saint Georges bridge in 2008. The US Army Corps of Engineers closed the outside lanes on the bridge as a safety measure and placed weight limits on the structure. It was decided in 2009 to repair the bridge. The bridge work was carried out between January and July of 2010. The resulting structure is now marked for two lanes of traffic, one in each direction towards the center of the bridge deck, and wide bicycle lanes towards the outside of the bridge deck.
Heavy traffic is still banned from the Saint Georges Bridge. To encourage trucks to avoid the bridge, Delaware DOT has opened interchanges on each side of the canal on DE-1 allowing the Roth Bridge to be used free of tolls despite DE-1 being a tollway.
The photo above is a view looking east down the channel of the C&D Canal towards the west face of the main bridge arch structure. The photo below is a view looking southeast towards the Saint Georges Bridge from the overpass where Kirkwood Saint Georges Road crosses highway DE-1.