Sector Tunnel (Immersed Tunnel) Project Type Immersed Tunnel Construction Project Title Saigon East and West Highway Construction Project Location Ho Chi Minh City, Vietnam Client Urban-Civil Works Construction Investment Management Authority of HCMC (UCCI), People’s Committee of Ho Chi Minh City / JICA ODA Loan Project Period February 2005 – Present Eastside Portal of the Saigon River Crossing Tunnel (The background of the picture is Centre of the HCMC) Problems addressed by the Project “Doi Moi” renovation policy introduced in 1986 has given a great impetus to boosting the economy in Vietnam. Especially in Ho Chi Min City (HCMC) the economic increase was remarkable. The rapid economic growth, however, resulted in disorderly urban environment, inducing more population density and traffic congestion in the city. In order to address such adverse situation of the city environment, HCMC established Master Plan 2020 that depicts the strategic future development of HCMC and surrounding areas. The concept also included that the new road network system such as radial road and ring road should be constructed to improve and develop the road transport system in HCMC. Accordingly, the construction of the East West Highway was planned as an important axial road connecting northeast and southwest outing area of HCMC that provides a short and efficient route from the city centre to the surrounding area. The Saigon River Crossing Tunnel (the Tunnel), which is a part of EWH, was constructed to cross the Saigon River that flows through the middle of the city and connects the central area of the city and the east side of the river. The Tunnel was selected in consideration of the lesser impact on the city scenery, navigation of the Saigon River and Saigon port. The total length of the Tunnel is 1,490 m accommodates 3x3 lanes driveways and emergency path at both outsides of the road. The Tunnel is first road tunnel constructed by immersed tunnel method not only in Vietnam but also in South East Asia. Service Period OC Global conducted the Technical Design including F/S Review, Definitive Plan, Detailed Design, and Tender assistance, Resettlement Programme and Construction Supervision under JICA ODA Loan for the execution of the East West Highway Project. The Technical Design commenced in 2001 and was completed in 2003, and Tender assistance was completed in November 2005 and the construction commenced from February 2005. The Tunnel and the entire 24 km of highway section were opened in November 2011 and the Project will be completed in the early 2015. Actual Project Works Immersed Tunnel section : L=370.8 m, 4 RC elements (length=90.5~92.4 m, width=33.3 m, height=8.9 m) Prefabricated in the dry dock located 20 km downstream of the Saigon River. Approach Tunnel section Cut &Cover Tunnel : Top down method with diaphragm wall (t=1.2 m) L=400 m (Westside), 320 m (Eastside) U-shape Structure : U-shape with diaphragm wall (t=1.2m) , L=70 m(Westside), 100 m (Eastside) : U-shape Retaining Wall, L=95 m (West side), L=115 m (Eastside) Tunnel E&M : Lighting system, Ventilation system, Safety system, Tunnel Control system Ventilation Building equip electrical and control room : Westside; 1,200 sq.m RC structure, 4-story above ground, Eastside; 1,100 sq.m RC structure, 3-story above ground and 4 under Other Buildings : Maintenance Building Toll correction building, Toll gate

Problems addressed by the Project - 株式会社 ... Tunnel (Immersed Tunnel) Project Type Immersed Tunnel Construction Project Title Saigon East and West Highway Construction Project

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Sector Tunnel (Immersed Tunnel)

Project Type Immersed Tunnel Construction

Project Title Saigon East and West Highway Construction Project

Location Ho Chi Minh City, Vietnam

Client Urban-Civil Works Construction Investment Management Authority of HCMC (UCCI), People’s Committee of Ho Chi Minh City / JICA ODA Loan

Project Period February 2005 – Present

Eastside Portal of the Saigon River Crossing Tunnel

(The background of the picture is Centre of the HCMC)

Problems addressed by the Project

“Doi Moi” renovation policy introduced in 1986 has given a great impetus to boosting the economy in Vietnam. Especially in Ho Chi Min City (HCMC) the economic increase was remarkable. The rapid economic growth, however, resulted in disorderly urban environment, inducing more population density and traffic congestion in the city. In order to address such adverse situation of the city environment, HCMC established Master Plan 2020 that depicts the strategic future development of HCMC and surrounding areas. The concept also included that the new road network system such as radial road and ring road should be constructed to improve and develop the road transport system in HCMC. Accordingly, the construction of the East West Highway was planned as an important axial road connecting northeast and southwest outing area of HCMC that provides a short and efficient route from the city centre to the surrounding area. The Saigon River Crossing Tunnel (the Tunnel), which is a part of EWH, was constructed to cross the Saigon River that flows through the middle of the city and connects the central area of the city and the east side of the river. The Tunnel was selected in consideration of the lesser impact on the city scenery, navigation of the Saigon River and Saigon port. The total length of the Tunnel is 1,490 m accommodates 3x3 lanes driveways and emergency path at both outsides of the road. The Tunnel is first road tunnel constructed by immersed tunnel method not only in Vietnam but also in South East Asia.

Service Period

OC Global conducted the Technical Design including F/S Review, Definitive Plan, Detailed Design, and Tender assistance, Resettlement Programme and Construction Supervision under JICA ODA Loan for the execution of the East West Highway Project. The Technical Design commenced in 2001 and was completed in 2003, and Tender assistance was completed in November 2005 and the construction commenced from February 2005. The Tunnel and the entire 24 km of highway section were opened in November 2011 and the Project will be completed in the early 2015.

Actual Project Works

Immersed Tunnel section : L=370.8 m, 4 RC elements (length=90.5~92.4 m, width=33.3 m, height=8.9 m) Prefabricated in the dry dock located 20 km downstream of the Saigon River.

Approach Tunnel section

Cut &Cover Tunnel

: Top down method with diaphragm wall (t=1.2 m) L=400 m (Westside), 320 m (Eastside)

U-shape Structure

: U-shape with diaphragm wall (t=1.2m) , L=70 m(Westside), 100 m (Eastside) : U-shape Retaining Wall, L=95 m (West side), L=115 m (Eastside)

Tunnel E&M : Lighting system, Ventilation system, Safety system, Tunnel Control system Ventilation Building equip electrical and control room

: Westside; 1,200 sq.m RC structure, 4-story above ground, Eastside; 1,100 sq.m RC structure, 3-story above ground and 4 under

Other Buildings : Maintenance Building Toll correction building, Toll gate

Page 2: Problems addressed by the Project - 株式会社 ... Tunnel (Immersed Tunnel) Project Type Immersed Tunnel Construction Project Title Saigon East and West Highway Construction Project

Highway Section (West) : L=13 km 8 lanes (6 lanes throughway and 2 lanes service road) include 6 bridges Clover leaf type Interchange at the junction of National Highway No.1

Highway Section (East) : L=7 km, 12 lanes (6 lanes throughway and 2 x 3 lanes service road) include 4 bridges, Y type Interchange at the junction of Hanoi Highway.