A15 road (England) over the old route of the A15 (B1206) and over the South Trans-Pennine railway. At junction 5, the A15 reforms at the dual-grade "Barnetby Top Interchange", which is crossed by the Viking Way and has an exit to Elsham. It continues north as a dual carriageway which carries about as little traffic as the M180. The M180 drops to two lanes under this roundabout and continues to Grimsby and Immingham as the A180. The A15 towards the Humber Bridge, goes directly across the runways of the former RAF Bomber Command airfield at RAF Elsham Wolds (where over 1000 of its
Centennial Bridge, Panama limited capacity.) The Centennial Bridge is located north of the Bridge of the Americas and crosses the Culebra Cut (Gaillard Cut) close to the Pedro Miguel locks. New freeway sections, connecting Arraijan in the west to Cerro Patacon in the east via the bridge, significantly alleviate congestion on the Bridge of the Americas. The Bridge of the Americas, which opened in 1962, was the only major road crossing of the Panama Canal. The traffic over this bridge was originally around 9,500 vehicles per day; however, this expanded over time, and by 2004 the bridge was carrying 35,000 vehicles per day.