{"id":26119,"date":"2026-10-20T16:08:04","date_gmt":"2026-10-20T13:08:04","guid":{"rendered":"https:\/\/trialoog.taltech.ee\/?p=26119"},"modified":"2026-10-21T10:01:34","modified_gmt":"2026-10-21T07:01:34","slug":"ain-kendra-estonias-road-construction-is-held-back-by-the-system-not-technology","status":"publish","type":"post","link":"https:\/\/trialoog.taltech.ee\/en\/ain-kendra-estonias-road-construction-is-held-back-by-the-system-not-technology\/","title":{"rendered":"Ain Kendra: Estonia\u2019s road construction is held back by the system, not technology"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"

Technology in Estonia\u2019s road construction sector has advanced rapidly over the past decade, but TalTech road and traffic expert Ain Kendra says unstable funding, rigid procurement and limited research and development funding are holding the sector back.<\/p>\n","protected":false},"author":8,"featured_media":26107,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[252],"tags":[391,397,740,902],"class_list":["post-26119","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-society","tag-artificial-intelligence","tag-innovation","tag-research-collaboration","tag-road-construction"],"acf":{"postbuilder":[{"acf_fc_layout":"text","type":"text","text":"

\u201cTechnology has advanced, but the sector as a whole has slowed down considerably over the past decade,\u201d Kendra<\/a> said, summing up the past ten years.<\/p>\r\n

One of the biggest changes has been digitalisation. Large projects increasingly use BIM, or building information modelling, which allows changes to a project to be reflected in drawings and other related data in a single operation. \u201cBut BIM is not universal either: for smaller tasks, there is no point using a cannon to shoot sparrows,\u201d Kendra noted.<\/p>\r\n

Drones, too, have become increasingly common in construction. They can measure road layers and check the quantities of materials laid. Yet Kendra says current rules often still require conventional verification measurements as well, suggesting that regulations have not kept pace with technological development.<\/p>\r\n

Road construction machinery also increasingly works from a digital model. A bulldozer knows the height and gradient of the road\u2019s subgrade, while a roller identifies areas and road layers with insufficient compaction as it works. This provides a picture of the whole rather than individual checkpoints.<\/p>\r\n

Although machinery is becoming smarter, Kendra believes uncertain funding is limiting progress in road construction.<\/p>\r\n

Road construction needs a longer-term plan<\/strong><\/h4>\r\n

Kendra explained that road maintenance was funded from fuel excise revenue until 2015. Since that link was removed, the volume of state-commissioned work has fluctuated sharply.<\/p>\r\n

A few years ago, asphalt production fell by as much as half. Some companies sold their equipment, and many people moved into other sectors. \u201cThe sector needs stability, not volumes that vary severalfold from year to year,\u201d Kendra said.<\/p>\r\n

The planning horizon is also too short. A single road construction contract can last a year and a half or two years, while retaining equipment and staff requires an even longer-term plan. When workloads depend on annual budget decisions, companies struggle to invest and keep people employed.<\/p>\r\n

Meanwhile, Estonia will need to build and upgrade several roads belonging to Europe\u2019s core road network in the coming years. Kendra believes it is no longer realistic to meet all the European Union\u2019s requirements for the core roads of the trans-European transport network (TEN-T) by the originally planned deadline of 2030.<\/p>\r\n

The technical condition of Estonia\u2019s main road surfaces is nevertheless generally good. \u201cWe have managed to keep the main roads in reasonably good condition, although there has not been enough money for municipal roads, which have been neglected,\u201d Kendra said.<\/p>\r\n

\u201cTechnology has advanced, but the sector as a whole has slowed down considerably over the past decade.\u201d<\/p><\/blockquote>","image":null,"align":""},{"acf_fc_layout":"image","image":26105},{"acf_fc_layout":"text","type":"text","text":"

A rigid framework<\/strong><\/h4>\r\n

One of Kendra\u2019s sharpest criticisms concerns the public procurement and contracting system. He believes contractors are told in too much detail what to do and how to do it, leaving little room to choose the best way to achieve the desired result.<\/p>\r\n

This becomes a problem, for example, when construction reveals that the subgrade differs from what was assumed during design. In some cases, another technology would make sense, but the contract may not allow it. \u201cWe need flexibility in the construction process so that decisions about necessary changes can be made on site, provided the quality of the final result remains just as good,\u201d Kendra said.<\/p>\r\n

Fear of procurement disputes adds to the rigidity. If a condition is changed after a contract has been signed, an unsuccessful bidder may argue that it would have submitted a different bid had it known. \u201cIn the end, it is the lawyer who wins, not the engineer,\u201d Kendra said.<\/p>\r\n

A similar problem affects supervision on behalf of the client. Kendra says an experienced engineer should be present on site and authorised to make decisions when necessary. However, contracts awarded on the basis of the lowest price often mean one engineer divides their time between several sites, students are used on site instead, and the client does not trust the engineer and wants to decide every detail personally. Kendra sees alliance contracting as one possible approach: the client, designer and contractor form a joint team from the outset and can adjust solutions together when needed.<\/p>\r\n

Data is collected, but difficult to use<\/strong><\/h4>\r\n

Road construction generates ever more data, but Kendra believes it is often difficult to use. Previous geological investigation results, for example, may be available in the Transport Administration\u2019s archive, yet designers have to work hard to find them.<\/p>\r\n

As a result, new investigations may be carried out at the same location even though the necessary information is already in the archives. \u201cThe Land and Spatial Development Board maintains digital engineering geology archives, but information on the Transport Administration\u2019s projects cannot be found there. Road Register information is linked to road chainage, or distance measured in metres along the road. But when a new road section changes the road network, the chainage changes too, so we cannot automatically examine a historical time series,\u201d Kendra explained.<\/p>\r\n

He believes better access to previous investigations would reduce duplication and give designers and researchers a clearer picture of which solutions have proved effective in practice.<\/p>\r\n

Better data also supports more informed choices during road design. This requires models that account for local materials, weather and traffic loads and help assess how a chosen solution might perform over decades. One of the most important ongoing development projects therefore examines the road life cycle over a much longer period than before.<\/p>\r\n

\u201cWe need flexibility in the construction process so that decisions about necessary changes can be made on site, provided the quality of the final result remains just as good.\u201d<\/p><\/blockquote>","image":null,"align":""},{"acf_fc_layout":"image","image":26110},{"acf_fc_layout":"text","type":"text","text":"

A half-century perspective<\/strong><\/h4>\r\n

TalTech is currently developing a new pavement design solution for the Transport Administration that would assess road-related costs \u2014 life-cycle costs \u2014 over 50 years and take CO\u2082 emissions into account alongside construction costs. Researchers are examining whether a model used in Sweden and Norway could be adapted to Estonian conditions. The model accounts more precisely for the effects of temperature and moisture on material properties.<\/p>\r\n

Kendra says a foreign solution cannot simply be adopted unchanged. Estonia uses a great deal of crushed limestone and stabilised bases, which require separate studies. Traffic has changed too: heavy goods vehicle tyre pressures may exceed those assumed in calculation models, while lane-keeping systems make vehicles follow the same wheel paths more precisely. This can accelerate rutting.<\/p>\r\n

Alongside new calculation methods, Kendra believes new materials must be sought for building future roads. Gneiss excavated during construction of the Paldiski energy storage facility, for example, could provide aggregate suitable for road construction. TalTech has also studied slag aggregate produced as an industrial by-product, whose strength properties can exceed those of natural aggregate. Before wider adoption, however, new materials must be tested on real road sections as well as in laboratories.<\/p>\r\n

Kendra does not support banning studded tyres, although he believes their use in the Tallinn area could be reduced by at least half. A previous TalTech study found that roughly two-thirds of passenger cars in Tallinn used studded tyres in winter. \u201cLess use of studs would reduce asphalt wear and allow the top layer of the road surface to be replaced less frequently.\u201d<\/p>\r\n

Over the next decade, Kendra expects artificial intelligence to play an increasing role in assessing road condition. It is already possible to drive along a road section with cameras and let software identify cracks, potholes and other damage from the video footage.<\/p>\r\n

However, he sees a change in prevailing thinking as the sector\u2019s greatest opportunity for progress. More flexible construction management and better use of collected data would help engineers make better-informed decisions and put new solutions into practice.<\/p>\r\n

\u201cLess use of studs would reduce asphalt wear and allow the top layer of the road surface to be replaced less frequently.\u201d<\/p><\/blockquote>","image":null,"align":""}],"related_authors":[{"author":7990,"position":""}]},"yoast_head":"\nAin Kendra: Estonia\u2019s road construction is held back by the system, not technology - Trialoog<\/title>\n<meta name=\"description\" content=\"Ain Kendra explains how unstable funding, rigid procurement and poor access to data hold back road construction in Estonia despite advances in technology.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/trialoog.taltech.ee\/en\/ain-kendra-estonias-road-construction-is-held-back-by-the-system-not-technology\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ain Kendra: Estonia\u2019s road construction is held back by the system, not technology - 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