The road is part of the European route E8, except for the one kilometer section between the national boundary and the intersection with highway 21, where the road is part of the European route E4.

The eastern 14 kilometer section of the road is part of a motorway called Perämerentie (which in English translates roughly to "The road of Bothnian bay"), and is the northernmost motorway/freeway in the world with Alaska Highway 3 in Fairbanks, Alaska being the second northernmost.

Finnish national road 29 was the first highway in Finland to be dual carriageway for its whole length.

[2] Right after the bridge the road intersects with the highway 21 at a grade separated junction.

[3] After the roundabout the road continues as a grade separated motorway with speed limit of 120 km/h for 14 kilometers until it terminates in Keminmaa at Kallinkangas junction with highway 4, where the motorway continues as highway 4 to the south towards the town of Kemi.