Alnobron
Coordinates: 62 ° 25 ′ 58 ″ N , 17 ° 23 ′ 53 ″ E
| Alnobron | ||
|---|---|---|
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| Convicted | 615 | |
| Crossing of | Alnösund | |
| place | at Sundsvall | |
| construction | Prestressed concrete - box girder bridge | |
| overall length | 1042 m | |
| width | 9.40 m | |
| Longest span | 134 m | |
| height | 142 m | |
| start of building | 1962 | |
| completion | 1964 | |
| location | ||
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The Alnöbron (Alnö Bridge) is a road bridge in the historic Swedish province of Medelpad and Västernorrland County , which connects the island of Alnön with the suburb of Johannedal von Sundsvall on the mainland.
The bridge, built between 1961 and 1964, was the longest bridge in Sweden when it was completed, until it was replaced by the Öland Bridge in 1972 .
The two-lane bridge leads Länsväg 615 over the Alnösund; the total of 1042 m long and 9.40 m wide bridge reaches a height of 42 m above the sound. The railings were raised to over 2 m in 2008 to prevent suicides ; pastoral telephones and surveillance cameras were also installed.
The bridge clearance is 40 m. The passage is marked by beacons at night .
The main bridge has 7 spans with spans of 60.5 + 126.8 + 134.0 + 134.0 + 134.0 + 126.8 m + 60.5 m. She is a pre-stressed concrete - girder bridge unicellular with one, haunched hollow box . The box girder is 5 m wide; its height at the pillars of 8.70 m decreases to the middle of the bridge field to 1.70 m. The thickness of the floor slab also decreases from 0.50 m to 0.14 m. Foreshore bridges over the bank slopes are connected to the main bridge.
The main bridge was built by the pillars of the balanced cantilever construction.
Web links
- Alnöbron Historical photos on digitaltmuseum.se
- Alnöbron Historical photos of Rune Södereberg on digitaltmuseum.se
- Alnöbron Historical photos of the construction of the Bosse Ericsson bridge on digitaltmuseum.se
- Alnöbron Historical photos of the construction of the Ragge Ellefsson bridge on digitaltmuseum.se
Individual evidence
- ↑ Beacon at the Alnö Bridge on schwedische-leuchtfeuer.de
- ↑ Dimensions according to the dissertation by Kristofer Manneteg, Therese Johansson: Finita Element Metoden som verktyg för systemberäkning av Alnöbron: Möjligheter och begänsningar i modelleringen av spännarmerade Konstruktioner. 2013, p. 35 (p. 52 in PDF; 32 MB)