Sarp Bridge

Sarp Bridge Sarpsbrua
NSB Class 73 train crossing the bridge
Coordinates	59°16′34″N 11°07′55″E / 59.276°N 11.132°E / 59.276; 11.132Coordinates: 59°16′34″N 11°07′55″E / 59.276°N 11.132°E / 59.276; 11.132
Carries	Østfold Line National Road 118
Crosses	Sarpsfossen, Glomma
Locale	Sarpsborg, Østfold, Norway
Owner	Norwegian National Rail Administration Norwegian Public Roads Administration
Characteristics
Design	Truss
Material	Steel
Total length	247 m (810 ft)
Longest span	53 m (174 ft)
No. of spans	3
History
Engineering design by	Christian Vilhelm Bergh (1854) Axel Jacob Petersson (1879) Hans Tønnesen (1938)
Constructed by	Skanska
Opened	25 February 1854 (1854-02-25)
Rebuilt	1879, 1938, 1943, 1977
Sarp Bridge Location in Østfold

Sarp Bridge (Norwegian: Sarpsbrua or Sarpebrua) is a series of bridges which span across Sarpefossen, a waterfall of the river Glomma in Sarpsborg, Norway. In the current arrangement, one bridge carries a pathway, one carries a single track of the Østfold Line and one carries two lanes of National Road 118. The road and pathway bridges are about 91 meters (299 ft) long, while the railway bridge is 247 meters (810 ft).

The first bridge at the site was a brick suspension bridge opened on 25 February 1854. It was rebuilt as a multilayer bridge and opened with rail tracks on an upper truss level on 2 January 1879. In order to strengthen the railway, a new steel truss railway bridge opened on 9 May 1931. The former bridge was then rebuilt as a wider road bridge. An accident on 15 April 1940 caused the fire department to blow away one of the pillars, collapsing the superstructure. A new road bridge was completed in 1943. The two were supplemented with a separate pathway bridge in 1977. There are plans to replace the existing bridges with a four-land road and three-track railway bridge, scheduled for no later than 2030.

There are three current bridges which cross over Sarpefossen, which is also referred to as Sarpsfossen. Upstream is a pathway bridge for bicycles and pedestrians. In the middle is a railway bridge and furthest downstream is a road bridge.

The railway bridge is officially named Bridge over Glomma at Sarpsfossen (Bru over Glomma ved Sarpsfossen). The steel truss bridge carries a single track of the Østfold Line, with the western end of the bridge situated 110.0 kilometers (68.4 mi) from Oslo Central Station. It has an overall length of 247 meters (810 ft), including viaducts on both sides of the bridge proper. The main span is 53 meters (174 ft), with two side spans measuring 29 meters (95 ft). The total truss length is 82 meters (269 ft). Just east of the bridge the Eastern Østfold Line branches off at the now disused Hafslund Station.