Sector Long-Span Bridge

Project Type Detail Design & Construction Supervision for Bridge Construction & Rehabilitation

Project Title The Kanchpur, Meghna, Gumti 2nd Bridges Construction and Existing Bridges Rehabilitation Project

Location Dhaka – Chittagong (National Highway No.1) , Bangladesh

Client Roads and Highways Department, Roads Division, Ministry of Road Transport and Bridges, Government of the People’s Republic of Bangladesh / JICA Loan

Project Period February 2014 – Present

Photo Montage of Meghna 2nd Bridge (Steel Narrow Box Girder Bridge, Bridge Length=930m)

Problems addressed by the Project

Bangladesh has had strong economic development with GDP growth rate of around 6% per annum in the 2000s, which in turn effected rapid growth in both the number of passenger and freight traffic. Accordingly National Highway No.1 is recognized to be widened to 8-lane in Kanchpur section, 6-lane in Meghna and Gumti sections.

With financial assistance from JICA-ODA, GOB are taking initiatives for the implementation of 2nd bridges con

struction parallel to the existing one. The superstructure of 2nd bridge is proposed as steel narrow box girder type based on the consideration of light weight, advantages to earthquake resistance and the fastest construction period; the foundation type is proposed as Steel Pipe Sheet Pile (SPSP) that can easily sustain against strong earthquake and riverbed scouring.

Existing Meghna and Gumti Bridges are multi span continuous prestressed concrete rigid frame bridges having hinges and expansion joints in the middle of each span between piers. It was observed that the hinges were losing their proper function to transfer the shear forces between the cantilevers, generating noises and unfavorable impact forces on the expansion joints when vehicles are passing on it. The existing Meghna Bridge is PC-box girder type with 11 spans and 930 m in length; among them 9 cantilever spans were connected by the center hinge. All center hinges except that at center of P5 - P6 will be removed and girder will be connected by filling concrete and placing PC bar at hinge section. Only the damaged hinge at P5 - P6 section will be replaced by new one with complete device. Like Meghna, the existing Gumti Bridge is also PC-box girder type with 17 spans and 1,410 m in length and also each span was connected by center hinge as well. All center hinges except that at center of P4 - P5 and P8 - P9 will be removed and girder will be connected by the same method followed in Meghna.

Service Period

OC Global completed the feasibility study of this project in 2013 as JICA Study. OC Global have been providing the consultancy services for detailed design, tender assistance and construction supervision since February 2014. The Services will be completed in October 2019.

Structural Outline (Meghna Bridge)

Actual Project Works

Project Item Works 2nd Kanchpur Bridge 6-Span Continuous Steel Narrow Box Girder

(Bridge Length=397.3 m, Road Width=18.1m) 2nd Meghna Bridge 12-Span Continuous Steel Narrow Box Girder

(Bridge Length=930.0 m, Road Width=17.75 m) 2nd Gumti Bridge 9-Span + 8-Span Continuous Steel Narrow Box Girder

(Bridge Length=1,410 m, Road Width=17.75 m Existing Kanchpur Bridge

Slab Deck Strengthening, RC Lining for Pier, Retrofitting for Foundation by SPSP with being held 2nd Bridge Foundation

Existing Meghna and Existing Gumti Bridge

Connecting the Simply Supported Girders to become the Continuous Girder at the Hinged Section, Retrofitting for Foundation by SPSP with holding 2nd Bridge Foundation

Others Approach Road, Intersection, Intersection Flyover, Box Culvert, etc