Preparatory Survey on the Project for the Improvement of the Tema Motorway Roundabout in the Republic of Ghana Final Report
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MINISTRY OF ROADS AND HIGHWAYS GHANA HIGHWAY AUTHORITY PREPARATORY SURVEY ON THE PROJECT FOR THE IMPROVEMENT OF THE TEMA MOTORWAY ROUNDABOUT IN THE REPUBLIC OF GHANA FINAL REPORT February 2017 JAPAN INTERNATIONAL COOPERATION AGENCY (JICA) CTI ENGINEERING INTERNATIONAL CO., LTD. EI JR 17-009 MINISTRY OF ROADS AND HIGHWAYS GHANA HIGHWAY AUTHORITY PREPARATORY SURVEY ON THE PROJECT FOR THE IMPROVEMENT OF THE TEMA MOTORWAY ROUNDABOUT IN THE REPUBLIC OF GHANA FINAL REPORT February 2017 JAPAN INTERNATIONAL COOPERATION AGENCY (JICA) CTI ENGINEERING INTERNATIONAL CO., LTD. PREFACE In response to the request from the government of Ghana, the government of Japan decided to conduct the “Preparatory Survey on the Project for the Improvement of the Tema Motorway Roundabout in the Republic of Ghana” and entrusted the survey to the Japan International Cooperation Agency (JICA). JICA selected and dispatched a survey team headed by Mr. Ryohei Watanabe of CTI Engineering International Co., LTD. from March 2015 to March 2017. The survey team held a series of discussions with the officials concerned of the Republic of Ghana, and conducted field studies associated with various engineering surveys. The results and findings of the field studies and the analysis results carried out in Japan are compiled in this report. I hope that this report will contribute to the promotion of the project and to the enhancement of friendly relations between our two countries. Finally, I wish to express my sincere appreciation to the officials concerned of the Republic of Kiribati for their close cooperation extended to the survey team. February, 2017 Akira NAKAMURA Director General Infrastructure and Peacebuilding Department Japan International Cooperation Agency SUMMARY 1.Situation of Republic of Ghana (hereafter referred to as Ghana) Although located along the Gulf of Guinea and Atlantic Ocean in the subregion of West Africa ninety- five percent (95%) of the country’s transport is dependent on road transport. Ghana has been making remarkable progress recently in improving the road network. However, only half of the entire arterial roads is paved and 38% of the paved surface is severely deteriorated. The Government of Ghana (GOG) formulated the National Transport Policy in 2008 and has been expanding and upgrading the international corridors. In particular, the policy puts high importance in the development of road network in the Greater Accra Region (GAR) that has a population of about 4 million as of 2010 and lying at the nodal point of three international transit corridors; i) Abidjan-Lagos Corridor, ii) Central Corridor, and iii) Eastern Corridor of Ghana with an aim to not only secure smooth flow of international logistics but also to resolve traffic issues of the region. The Tema Motorway Roundabout is a 5-leg roundabout where traffic from Accra and Tema Port converge, causing heavy traffic congestion during rush hours. The congestion and speed retardation at the roundabout is becoming an impediment to smooth and safe movement of people and traffic. In addition, the number of cargo vessels at Tema Port has been increasing in an annual rate of 12% between year 2000 and 2012. The GOG is planning expansion of the port to correspond to the increase. The is expansion plan is anticipated to contribute to significant increase of traffic volume in this region and at the roundabout as well. 2. Requested Scope The request made by the GOG is a phase wise improvement of Tema Intersection. The scopes of each phase are as follows; Phase-1: Construction of 1st tier flyover including detailed design and construction supervision Phase-2: Construction of 2nd tier flyover including detailed design and construction supervision 3.Survey Schedule Survey schedule is shown in Table-1. Table-1 Survey Schedule Surveys (Site Survey etc.) Period 1st Site Survey April 7th 2015 ~ May 22nd 2015 Interim report Explanation October 19th 2015 ~ October 31st 2015 2nd Site Survey November 11th 2015 ~ December 20th 2015 Design Review and Traffic Safety by June 23rd 2016 ~ July 15th 2016 GHA Draft Final Report Explanation November 2nd 2016 ~ November 14th 2016 4.Project Scope A preliminary comparison of improvement methods, which was based on conceptual images and limited was carried out and explained to the GOG during the IC/R meetings. The comparison was substantiated and application was justified by reflecting actual figures and data obtained from various engineering surveys and hearings conducted during the site surveys. The project scope was then determined, discussed with JICA, explained to GHA and sought GHA’s agreement. The agreed scope of the project is shown in Table-2. Table-2 Project Scope Requested Scopes Target Phase-1 ○ Construction of 1st level flyover including improvement (to be undertaken by of the objective roundabout, the detailed design of a graded this project) intersection and construction supervision Phase -2 - Construction of 2nd level flyover including, the detailed design of a flyover and construction supervision 5.Project Outline The outline of the for Phase 1 is shown in Table 3. Table-3 Outline of Project for Phase 1 Items Specification and rough quantities East - West Total Length 2,100m Direction 730m (Motorway – Depress Section (Box culvert:190m、 : ) Aflao Road) Depress section 540m Length Length North - South Direction (Harbor Road – Akosombo Road) 1,900m Lamps 7,000m Service Road 3,500m 100km/h Design Speed (Harbor Road : 80km/h) Design Motorway STA.0+0~8+20 31.9m Depress Section STA.8+20~10+10 31.9m ~ Outline Aflao Road STA.10+10 16+0 31.9m Harbor Road STA.0+0~7+0 11.0m Road Width Akosombo Road STA.7+0~14+20 11.0m Service Road 6.0m Motorway / Depress Section / Aflao Road 3 Lanes / 3.65m (3.65m×3=10.95m) Width Akosombo Road / Harbor Road 2 Lanes / 3.65m (3.65m×2=7.3m) way and way and Carriage Carriage Numbers of Service Road 1 Lane / 3.0m (3.0m×1=3.0m) Items Specification and rough quantities Motorway 10.0m / 3.0m Depress Section / Aflao Road 4.0m / 2.5m and and Center Center Median Median Shoulder Shoulder Akosombo Road /Harbor Road 4.0m / 2.5m Asphaltic Concrete Pavement t=11~15cm、136,300m2 Box Culvert L=190m Retaking wall H=1.4m~11.0m、L=640m Structure Pedestrian Bridge 4 Numbers At Grade Intersection controlled by Traffic Signal 1 Location Road Lighting Box culvert section :L=190m 6.Project Implement Schedule and Project Cost The implementation period of the Project is estimated to be 8 month for detailed engineering design, and 36 months for construction work. The project cost to be borne by the recipient country is estimated to be about 6.6 million Ghana Cedi (213 million Japanese Yen, GHC1.0=JPY32.26). The cost to be borne by the Japan’ Grant Aid is not shown in this report due to the confidentiality. 7.Project Evaluation (1) Relevance of the Project Implementation of the Project under Japanese Grant Aid has been verified from the following viewpoints: Large Scale of Beneficiaries The Project area is located in Tema City area and number of beneficially is estimated approximately 500 thousand residences and approximately 90 million users in total. The Effect of the Project The Project would contribute to easing traffic congestion and smoothing transportation of people and freight. These would consequently contribute to the improvement of transportation of network development for logistics throughout the nation and entire Western Africa Region. Human Security The Project would contribute to the securing stability of people’s lives, development of their daily lives, and securing BHN (Basic Human Needs). Operation and maintenance of Facilities: As excessive advanced technique is not necessary, the Ghana side would be able to carry out adequate operation and maintenance work in planned consistent way Consistency with Long Development Plan This Project is consistent with the Policy and target described in the Government National Development Master Plan and would help in achieving enhancement of national trunk road network improvement. Impact to Environment There is no significant or permanent negative impact to environment and social condition. Necessity and Superiority of Japanese Technology Japanese most advanced and cutting-edge construction technology, such as time control, safety control, and quality control, is required to execute the Project under Japan’s Grant Aid scheme without any serious issues. (2) Effectiveness 1) Quantitative Effect The expected quantitative effect to be produced through performing the works of target Project for economic cooperation is shown in the following Table 3. The values of base year before conducting the Project and target year in three (3) years over completion of the Project are respectively set up. Table 3 Quantitative Effects Basic Value Target Value in 2023 Index (Actual Record of 2015 year) (Project Completion Year) Passenger Volume 86.6(Million)/year 156.8(Million)/year Freight(Cargo) Volume 44.3(Million)/year 74.3(Million)/year Travel Time per minute 8.2 minute 2.0 minute (AM peak hour at Accra-Aflao 2.0 km) 2) Qualitative Effect The prospective effects are; To moderate traffic congestion and to provide uninterrupted traffic flows. To facilitate and grade up transit system in the West African Region. a) Stable carrier-transit time and effectiveness in logistics leaving and arriving at the Tema Port will be improved. b) Traffic safety of pedestrians and vehicles at the intersections will be improved. c) Future emission of transport related greenhouse gases will be reduced. d) Connecting links between