Design Comparison of Wain River Bridge on New Capital City Toll Road Section 3A: Karangjoang – KKT Kariangau

Design Comparison of Wain River Bridge on New Capital City Toll Road Section 3A: Karangjoang – KKT Kariangau

Authors

  • Andrew Nugraha Standyarto
  • Dedi Prayitno
  • Wira Wijaya

DOI:

https://doi.org/10.58674/phpji.v16i1.299

Keywords:

New Capital City, Toll Road, Bulb Tee, Steel Box Girder, Launching Gantry

Abstract

To distribute country development and as a centralization of government, Indonesia will move its capital city from the crowded Jakarta in Java Island to New Capital City (IKN) of Nusantara in East Kalimantan. To ensure the connectivity and accessibility between existing city of Balikpapan to Nusantara, several sections of toll roads are built from 2022 - 2024, including Toll Road of Section 3A that connects Karangjoang to Container Terminal of Kariangau. There are many structures that will be built along the trace such as pile slab, box culvert, underpass, overpass and the 913 m long bridge that crosses 3 segments of Wain River on STA 18+664. From initial DED, the main span of bridge only uses 50 m PCI Girder, but from more thorough survey and agreement with Ministry of Transportation, it’s agreed that from the 5 m designed clearance is then changed to 10.5 m to accommodate local company’s passing tugboats and pontons. Bridge design on the passed 3 main spans of river is then conducted on 2 alternatives, 66 m Steel Box Girder (SBG) and 60.8 m Bulb Tee / Prestressed Concrete T (PCT) Girder. Both designs are compared based on method, cost and duration. Both bridges will use launching gantry for erection with 250 billion IDR cost in 114 days just for SBG main span while Bulb Tee with cost of 178.5 billion IDR in 102 days. From the analysis done, the SBG design is more costly by 40.22% and time consuming by 11.76% to be implemented. Therefore, Bulb Tee Girder is applied for Wain River Bridge main spans.

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Published

2023-10-16

Issue

Section

TOPIC D : Geotechnic, Bridge, and Tunnel
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