At the moment, we are working on many interesting projects. A small part of them is featured here, the rest may be found in the individual section.
The České Budějovice bypass is one of the most observed and the most anticipated motorway constructions in the Czech Republic. Rightly so - the two new, simultaneously built sections of the D3 motorway will significantly relieve the chronically congested South Bohemian metropolis.
The motorway construction of a section of the D3 motorway is 7,197 m long and has been designed in a flat terrain near České Budějovice and its agglomeration.
COLAS is building another section of D48. The four-lane road, which is currently not compliant with the standard categories, will become a fully-fledged and safe motorway that will connect the D1 with Poland once fully completed.
The biggest part of our activities is concerned with the whole process of road engineering, particularly construction, repairs and reconstruction.
Our scope of activities includes (but is not limited to) engineering motorways, roads, urban and suburban roads, paved areas, such as car parks or pavements, cycling paths, sports grounds, etc. During the process, we are also often adjusting utility systems (e.g. waterworks) as well as cultivating surrounding greenery, flora and terrain, when necessary. We try to use as much of our products as possible, i.e. hot asphalt mixes or quarried aggregates.
The South Tangent (road II/143) connects the existing I/3 road with the construction of the city section of the D3 motorway, the nearly three-kilometre-long link.
The D48 motorway, which is part of the TEN-T trans-European road network and the international road E 462 Brno - Český Těšín - Kraków, was implemented in association with other companies (Metrostav a.s. and SWIETELSKY, s.r.o.).
The COLAS CZ, a.s. section is located in a geomorphologically very rugged area, with bridges alternating with deep cuttings, the deepest of which has a wall height of 16 meters. There are three bridge structures, including a four-pole 150-metre-long one.
Our main field of work in this part of civil engineering deals primarily with construction, repairs and reconstruction of both road and railway bridge structures. As for bridges, we specialise on those that have a medium span up to 100 m. As for the material, there are many options we are able to build from scratch: RC bridges, prestressed concrete bridges, precast concrete bridges and steel-concrete composite bridges as well as steel and wooden bridges.
Besides structures intended for vehicles, we are constructing steel and wooden bridges for pedestrians and cyclists, footbridges, retaining walls, noise barriers, utility tunnels and structures made of waterproof concrete. We also offer refurbishment and modernisation works on existing bridge structures.
The Kácov bridge project involves the construction of a new three-span road bridge with a total length of approximately 75 m over the river Sázava. COLAS CZ, a.s. built the new bridge to replace the existing structure which had been no longer suitable due to its poor condition, limitations of load capacity and unsuitable geometric parameters for the needed traffic crossing.
On May 2nd, 1973, a new bridge (nowadays called Patton Bridge after the late general Patton), over the river Mže, was put into operation. The bridge has relieved the traffic by deflecting it from the square into the direction of Karlovy Vary and Žatec.
The new bridges had replaced an obsolete overpass in the eastern part of the Czech capital.
COLAS CZ, a.s. also performs railway and tramway projects, including working on both the railway track substructure and superstructure and related structures such as bridges, culverts or platforms. In co-operation with our partners, we are able to deliver traction mains or signalling and communication equipment for both railway and tramway lines.
From March 2022, the tramway line Ohrada - Krejcárek was closed for reconstruction and passengers had to take alternative buses. However, the fast connection between Žižkov and Libeň on rails was re-opened this June. The complete reconstruction of the tramway link, which was carried out by a consortium of Colas CZ, a.s. and FIRESTA-Fišer and whose investor was the Prague Public Transit Company (DPP), is now fully functional.
Colas CZ, a.s. was working on the reconstruction of the tramway tracks in Koterovská Street in Plzeň for 3 months.
Colas CZ, a.s. won a technically interesting contract in Olomouc, a city where trams first started running back in 1899. In Olomouc, a key centre of the ethnographic region Haná, there is currently hapenning a lot of gradual repairs and modernisation of tramway tracks and stops.