Shin Yang Group :: Civil Engineering




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Overview | Locality Plan | Project Layout Plan | Asean Bridge

The ground-breaking ceremony of Upper Lanang Bridge, Sibu was held on 12nd October, 2003 by THE RIGHT HONOURABLE DATO SRI WONG SOON KOH. The bridge is estimated to be completed in April 2007. Project Description The site of the Bridge crossing is approximately 6km upstream of the Sibu Town Centre. The location of the road is joining the Upper Lanang Bridge towards the existing Upper Lanang Ferry Ramp and then crossing the Bridge to join the existing road to Sarikei / Bintangor. The Bridge and Approach Road will link the local road system serving Sibu Town Centre and also for the movement of regional traffic in and out of Sibu. The total length of the road construction including the proposed Bridge is approximately 3.35 km with another 3.24 KM of slip road. The construction activities consists of the followings: A. Access Road The access road construction can be sub-divided into 3 areas as follows: Access Road at Sibu side The access road at Sibu side consists of 974 meters 2 lanes dual carriage-way joining the Upper Lanang Road to the bridge. The road shall come with road junctions, earth shoulders, earth drains, culverts , traffic signs and street lightings. Access road at Assan side The access road at Assan Side consists of 1155 meters 2 lanes dual carriage-way joining the Bridge to the Toll Plaza which is located 435 meters away and then merged to the existing road to Sarikei / Bintangor. The road shall come with earth shoulders, earth drains, culverts, traffic signs and street lightings. Slip roads at Sibu and Assan side The slip road at Sibu side consists of 1075 meters 2 lanes carriage way. The road is serving those people living around the bridge without intention going across the bridge. The road shall come with road kerbs, earth drains, culverts, road marking and signages. The slip road at Assan side consists of 2166 meters of 2 lanes carriage-way. The road is serving those people living around the Bridge and Toll Plaza without intention crossing the bridge. The road shall come with road kerbs, earth drains, culverts, road marking and signages.


B. Bridge The proposed bridge has an overall length of 1220 meters comprising 4 balanced cantilever spans and 8 equal spans of 40 meters length at each side of the cantilever spans. The levels of the Bridge center line varies from 6.637 MRL to the middle of the Bridge which is the highest point at 31.57 MRL. The longitudinal gradient of the Bridge is 4.8%. The bridge shall be constructed with 2 lanes dual carriage-way complete with road barriers, footways, road kerb, service trenches, parapet walls, guard rails, guard rails, drainage holes and street lightings. The navigation clearance of 110 meters wide by 20 meters height measured at AFL (3.0 MRL) shall be provided for each way vessels sailing across the Bridge. The bridge construction activities consist of 2 portions as follows: Approach Spans The Approach Span shall be from Abutment A to Pier 8 and from Pier 12 to Abutment B. The total length of the approach span is 640 meters on each side of the river comprised of 8 equal spans of 40 meters length. The Approach Span foundation is supported by the 600mm diameter G80 pre-stressed concrete spun piles. The pier columns height varies from 1 meter to 20 meters high. Ten nos. of percast post tensioned T girders of 2.2 meters overall depth which weighted about 100 tonnes shall be installed at each span. Main Span The Main Span across the Batang Rajang shall be of length 580 meters comprising variable depth, single cell, pre-stressed concrete box girder to be constructed cast-in-place using the balanced cantilever technique with spans of 110, 180, 180 and 110 meters in length. The Main Span foundations are supported by diameter of 1.5 meters steel tube piles infilled with reinforced concrete, and socketed into rock. The rock socket length would be 10 to 15 meters into the rock. The main river pier 10 located near the middle of the river will be designed for barge impact load from a 6000 tonne barge traveling downstream at 3.0m/s including river flow velocity. The box girder superstructure is proposed to be constructed by the insitu balanced cantilever method with each segment of 3.0 or 4.0 meters length.

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