In 2002, 15.6 km (9.7 mi) of the highway was repaved from 10 km (6.2 mi) south of Shaunavon to just north of the Frenchman River[7]
In 2004, a stretch of the highway from 3 km (1.9 mi) south of the Frenchman River to 10 km (6.2 mi) north of the river was upgraded and resurfaced[8]
In 2009, 12.8 km (8.0 mi) of the highway from Climax to the Frenchman River was upgraded to a primary weight highway[9]
In 2022, 16 km (9.9 mi) of Highway 37 was repaved at Shaunavon — 12 km (7.5 mi) north from the intersection with Highway 13 and 4 km (2.5 mi) south[10]
In May of 2024, it was announced that 1.3 km (0.81 mi) of Highway 37 through Gull Lake will be resurfaced and upgraded with new curbs and gutters[11]
Frenchman River landslides
Saskatchewan Highways and Transportation (SHT), now the Ministry of Highways and Infrastructure undertook a landslide risk management system program to monitor risk sites, apply technological innovations to prevent any further erosion of the riverbank and plan responses to future landslide movement detected by monitors. Highway 37 south of Shaunavon along the Frenchman River has experienced landslides.[12]