The Forest Centre is currently carrying out the TIESIT project funded by the Ministry of Agriculture and Forestry to improve wood and energy supply, in connection with which a condition survey of the central private road network will be carried out.
The central private road network consists of various functionalities of private roads, such as permanent settlement, agriculture and forestry, business activities, etc. The volume of the central private road network is estimated to be around 150,000–200,000 km.
The condition of the roads should be determined by analysing densely pulsed laser scanning data with a density of at least 5 points/m2. The estimated workload of this call for tenders is between 50,000 and 70,000 km. A maximum of EUR 250,000 has been budgeted for the procurement.
As a result of the survey/analysis, the service provider must produce a road-by-road static condition of the private road network subject to the invitation to tender, as described by traffic light technology (red, yellow and green).
Need for renovation/condition classification according to the traffic light thinking model
• Red = need for renovation between 1 and 5 years
• Yellow = need for renovation in the 5–10 year period
• Green = no need for renovation
The Forest Centre is currently carrying out the TIESIT project funded by the Ministry of Agriculture and Forestry to improve wood and energy supply, in connection with which a condition survey of the central private road network will be carried out.
The central private road network consists of various functionalities of private roads, such as permanent settlement, agriculture and forestry, business activities, etc. The volume of the central private road network is estimated to be around 150,000–200,000 km.
The condition of the roads should be determined by analysing densely pulsed laser scanning data with a density of at least 5 points/m2. The estimated workload of this call for tenders is between 50,000 and 70,000 km. A maximum of EUR 250,000 has been budgeted for the procurement.
As a result of the survey/analysis, the service provider must produce a road-by-road static condition of the private road network subject to the invitation to tender, as described by traffic light technology (red, yellow and green).
Need for renovation/condition classification according to the traffic light thinking model
• Red = need for renovation between 1 and 5 years
• Yellow = need for renovation in the 5–10 year period
• Green = no need for renovation
Content of the condition assessment of private roads
The condition assessment is carried out geographically in those areas where densely pulsed laser scanning data is available. The tenderer is obliged to obtain the necessary materials for the condition assessment. The tenderer indicates the roads to be mapped for each bowling area.
In the condition survey, at least the following road identifiers and characteristics of the road/road structure must be collected to determine the condition of the roads. The review/analysis should be defined for road sections 10 meters and longer:
• Road surface (frame) polygon in 10 m long segments
• Road construction type: filled (road frame higher than the surrounding ground surface) /side-cut (road surface lower than the surrounding ground surface e.g. rock cut) / cut (the road is located on a slope) / ground level (road surface at the level of the surrounding ground)
• Location of road ditches and height of the road frame from the identified bottom of a shallower ditch to the middle of the road surface on the segment
• Depth of the road ditch
• The height of the road frame compared to the Forest Power forest road guideline for the soil type in question
• Groove depth
• Road geometry with at least curve radius at 40 km/h and length geometry
• Slope of the road ramp in degrees from the edge of the road frame to the bottom of the ditch
• The generalised condition of the surface of the Digiroad section and the generalised height of the hull to the cross-sectional shape requiring the subsoil of the road section to be mapped, which are described in the appendix to the Forest Force Forest Road Guide (https://metsateho.fi/wp-content/uploads/2015/03/Tieohjeisto_osa_2_Liiteosa.pdf pages 4–8)
The progress of the work is monitored in monthly meetings. The completed condition survey data is transferred to the client's system without delay in either ESRI shapefile or OGC GeoPackage formats.