Bridges & Tunnels

Project Description

Taking into consideration high volume of traffic on the existing road, the Ministry of Construction and Housing has decided to initiate a new corridor study and then design and construction of new road.

BOTEK is given the assignment, which includes the corridor study of various alignments and selection and recommendation of the best suitable alignment to the Ministry and after the approval of the selected alignment, preparation of Preliminary and Final Design and also Tender Documents of new Erbil Koya highway.

The project starts after Kasnazan on Erbil – Koya Highway just after the dual carriageway ends. The project section is approximately 65 km and existing Koya – Suleymaniye road after Koya city.

Total length of the alignment is 59 km and has 1 major bridge, 67 culverts and 3 intersections. Design speed adopted is 120 km/hr, minimum horizontal curvature adopted on the alignment is R= 1000 m, maximum longitudinal grade is 6% which is used once in a critical location. This slope can be decreased after the detail survey. The road will be dual carriageway 2*2 with a 7 m median and 3.75 lane widths.

Services Provided

• Prepare the alignment alternatives
• Preparation of preliminary and detailed design

Project Description

Preliminary and Final Design of 29 kilometer (2X3) State Motorway.

• 29 Km Final Project
• 29 Km Geotechnical Investigation Engineering Work
• No. 12 (25600 m²) Bridge Projects Works
• 29 Km Traffic Project Works

Services Provided

• Horizontal and Vertical Alignment Studies
• Preliminary and Final Design
• Detailed Bridge Design
• Drainage Design
• Geological Studies
• Hydrogeological Studies
• Geotechnical Studies

Project Description

Preliminary and Final Design of 48 kilometer State Roadway

Services Provided

• Preliminary and Final Design
• Detailed Bridge Design
• Interchange, Viaduct
• Drainage Design
• Geological Studies
• Hydrogeological Studies
• Geotechnical Studies

Project Description

Preliminary and Final Design of 34km State Roadway, (2×2)

A: 33,44km. Road construction project

B: 33,44km. Ground research engineering services construction

C: 33,44km. Traffic project construction

D: 5 piece (4966 m2) Services on Bridge Construction

Services Provided

• Preliminary and Final Design
• Detailed Bridge Design
• Interchange Design
• Drainage Design
• Geological Studies
• Hydrogeological Studies
• Geotechnical Studies

Project Description:
Design and Supervision of Batinah Expressway Package 5 and 6 has 86 Km to be built and 46 km link roads to be upgraded and dualized. Starts from the end of Muscat expressway. The alignment runs rearly parallel to the existing Batinah dual carriageway at a distance varying between 5 km and 20 km approximately on the mountain side, and ends near the Oman – UAE border at Khatmat Malaha.

Project Details:
2×4 Lanes Expressway(86 km) and 2×2 Lanes(46 km) width : 3,75 Polymer Modified Bitumen(PMB)
7 Interchanges(total 540 m) – Directional bridges(total 507.2 m),
7 River Bridges and Railway Bridge(1 Bridge 657.5m, 1 Bridge 492.5m, 1 Bridge 228.5m, 1 Bridge 360.5m, 1
Bridge 195.5m, 1 Bridge 228.5m, 1 Bridge 261.5m)
3 flyovers(total 180 m) and 6 underpasses(total 261.6 m),
Culverts, retaining and flood protection/training works
Toll plazas including operating systems for the revenue collection
Park Areas, Rest Areas and Service Areas

Sultanate of Oman Standard Documents for Building and Civil Engineering Works (both the third edition 1981 and the fourth edition 1999 are widely used) with risk allocation broadly following that of the FIDIC Red Book (Employer designs; contractor builds) all the works necessary for the construction and operation of the expressway.Link Roads.

Services Provided:

Design
Pre-Feasibility/Feasibility Studies Route Alignment Selection
Aerial Mapping
Geological and Geotechnical Investigations
Preliminary and Detailed Design of Expressway and Link Roads
Architectural and Design of Toll Plazas, Rest Areas and Service Areas
Preparation of Cost Analysis
Preparation Tender Documents and Specifications
Preparation of Environmental/Social Impact Assessment Report

Project Management
Tender Evaluation Report and help client during the selection of the Contractor
Prepare the project schedule with Primavera
Procurement approval
Schedule, attend and lead meetings with contractors
Hosting meetings with the Client, Authorities and with Contractor
Project documentation
Identify Possible trouble spots before becoming a claim from the contractor
Assess and evaluate Contractor Claims

Construction Supervision
Supervision of Motorway Construction
Supervision of Viaduct, Bridges
Supervision of Pavement and Earthworks
Supervision of Rest Area, Service Area, Toll Plazas and Toll Area Construction
Supervision of all Utility Lines Installations
Supervision of Relocation of Electric Lines and Gas Lines
Supervision of Lighting Works, Landscape Studies and Planning
Quality Assurance and Quality Control
Environmental management plan
Apply Health and Safety Requirement on Site
Preparation of Final Accounts and Payment Certificates

Project Description

The Government of Georgia has received a grant from the International Development Association (IDA) for a Georgian infra-structure pre-investment facility (IPF). The purpose was  for as detailed engineering design and preparation of  bidding document based on World Bank standards for the 24km section of the E-60 Highway (this section) was between km56 and km80 (Iogeti-Sveniti). The section is located about 56 km. west from Tbilisi and is to be upgraded from a 2 lane to a 4 lane road

Services Provided

• Revision/Completion of the preliminary design
• Preparation of detailed design
• Preparation of the bidding documents
• Preparation of draft pre-qualification document (PQD)
• Work plan and time schedule
• Monthly progress reports
• Technical reports (geometrical design, pavement design, bridge and structure design, bill of quantity, cost estimate),
• Draft bidding documents
• Final bidding documents

Project Description

This project consists of detailed design for Sariyer Maden UnderPass Bridge and Grade Separated Interchange Bridge and Road.

Scope of the Project

• Design of road structures
• Geotechnical Survey, Soil Investigation
• Field Surveys
• Drainage Design
• Earthworks Calculations, Bruckner Calculations, Cross Sections
• Bridge Design
• Interchange Design
• Bill of Quantities

Services Provided

• Review of Control Drawings
• Provision of Route Study
• Identification and Assessment
• Provision of Preliminary Design
• Provision of Final Design
• Provision of Supplementary Drawings
• Data Processing and Documentation

Project Description

This project consists of detailed design for Gaziosmanpasa Hadimkoy TEM OverPass Bridge Widening and Connection Road and Intersection.

Scope of the Project

• Design of road structures
• Geotechnical Survey, Soil Investigation
• Field Surveys
• Drainage Design
• Earthworks Calculations, Bruckner Calculations, Cross Sections
• Bridge Design
• Intersection Design

Services Provided

• Review of Control Drawings
• Provision of Route Study
• Identification and Assessment
• Provision of Preliminary Design
• Provision of Final Design
• Provision of Supplementary Drawings
• Data Processing and Documentation

Project Description

The project included preparation of preliminary and final design of (2×2) state highway approximately 27 km long. The design work has been based on upgrading the highway standards at those sections of the existing Ceyhan – Yumurtalık State Highway which lies south of Turkey. In addition to highway design sections, BOTEK also made improvements to the existing sections on the horizontal and vertical geometric standards.

The design work included the following: Topographical and other field surveys, structural evaluation and design, drainage and hydrological studies and design, soils and materials investigations, pavement evaluation and design, preparation of complete construction plans.

Project Details

11 at-grades interchanges
5 river bridges
1 overpass

Services Provided

• Review of Conceptual Design
• Field Surveys
• Environmental Impact Assessment
• Design of Hydrological Structures
• Final Detailed Design of
• Ancillary Structures
• Drainage Design
• Cross Sections
• Bruckner Calculations
• Soil Investigation
• Traffic Study
• Preparation for the Bill of Quantities
• Assistance to State Highways Directorate on Tender Procedures

Project Description

Ankara – Pozantı (Çiftehan – Pozantı Section) Motorway is the part of Trans-European Motorway (TEM) connecting western Anatolia to the southern Anatolia starting from Ankara. BOTEK has provided supervision and engineering consultancy services for 18.498 km long, 3-lane Motorway comprises earthworks, structures, bridges and viaducts, tunnels, administrative and service buildings, toll plaza, road pavement, security, traffic and secondary works, for the Ankara – Pozantı Motorway .

Project Summary

• Lighting Works comprising all motorway, toll plaza, tunnels, over-passes, under-passes and interchanges to include transformers, lanterns, armatures, polls, cables, emergency generator and all other ancillary equipments and spares
• Emergency communications system works include phones, cabling, power source, posts and other works and spares
• Demolition, reconstruction or relocation of under or above ground electrical, telecommunication lines and drinking water installations
• Arrangement and planning ofside roads and facilities located alongside of the motorway

• Motorways (2×3) 16.046 km
• Connection Roads    (2×2)   2.452 km

TOTAL: 18.498 km

As can be seen from the description of actual services provided by our staff together with the absence of PIU unit in this project, BOTEK in reality, while executing the main duties of the Consultant, also fulfilled the task that was expected from a PIU unit, as far as quality control and,  financial and administrative duties were concerned.

Project Summary

• Culverts
• Under-Passes
• Under-pass bridges having total length of 81 m
• Interchange Bridges having total length of 117 m
• Viaducts having total length of 2470 m
•  Twin Tube Tunnels;
  • Kırkgeçit Tunnel: 2 x 497 m
  • Çakıt Tunnel: 2 x 469 m

• Toll Plaza

• Reinforced concrete retaining walls having total length of 10.383 m

Reinforced concrete piles having total length of 38400 m will be constructed for the foundations of viaducts and bridge

Building Summary

Within the scope of Çiftehan – Pozantı Section of Ankara – Pozantı Motorway, there exist;​

• Supervision of Motorway Construction
• Supervision of Viaduct, Bridge & Structure
• Supervision of Motorway Barriers and
• Railings Mountings
• Supervision of Construction of Facilities,
• Parking and Maintenance Areas, Service
• Stations, Toll Plazas, Administrative and
• Public Buildings
• Supervision of Motorway Landscape Works
• Supervision of Pavement and Earthworks
• Supervision of Electric and Water Line
• Installations
• Supervision of Lighting Works
• Traffic Census
• Traffic Signs and Signalization
• Drainage Works
• Landscape Studies and Planning
• Design Review
• Quality Control
• Data processing and Documentation
• Preparation of Final Accounts and Payment Certificates