Prnjavor – Doboj

Client: PC Republic of Srpska Motorways
Designer: TZI – Inzenjering Ltd. Sarajevo

Short description and services provided by TZI – Inzenjering Ltd. Sarajevo: 

By the implementation of the motorway connection of Banja Luka and Doboj as a priority investment project, significant improvements in traffic capacity and service levels in the part connecting the corridors Xc (E 661) and Vc (TEM) would be achieved. The initial chainage of the referred motorway is located behind the interregional interchange Mahovljani 1, and the end is at the connection with the existing motorway M17 (respectively, interregional interchange Johovac 2), (section Seslije-Doboj), between the settlements Johovac and Rudanka. The section of the motorway itself includes three interchanges Mahovljani 2, Prnjavor and Johovac 1, type “T- interchange” with toll station. The basis for the start of activities on the preparation of project documentation were the Preliminary Design (Institute IGH d.d. in 2009) and a geodetic survey made for the purposes of preparation of project documentation in October 2012.

Project documentation consists of the following groups:

A Main alignment – section Prnjavor – Doboj=36 km
B Interchanges – Interchange Prnjavor and Johovac 1
C Roads out of the main alignment l=20,4 km
G Geomechanics
H Drainage, water protection and river regulation – Internal and external drainage including 43 culverts
I Installation
O Structures – 52 structures including Bosna Bridge l=418 m
P Traffic signalization and other equipment
V Toll pay system, traffic maintenance and control center, accompanying service facilities

The structures on the respected section are designed in accordance with geomorphological and hydrological conditions. On this section smaller bridges (span up to 15m) are dominant and they are designed as box AB structures.