As a decade, the 70s were marked by consistent growth for Sprague-Rosser as demonstrated by our efforts on infrastructure projects such as the Yellowhead Trail, 170th street overpass, and the Whitemud Freeway construction of Calgary Trail to 75 Street. In 1974 Sprague-Rosser is proud to join in the construction of a new coliseum for our then new hockey team, the Edmonton Oilers. Around the same time Sprague-Rosser also began working on the Citadel Theatre in the downtown core. In 1978 we were contracted to commence work on the Jasper Avenue section of the LRT (Light Rail Transit).

Building on our success in the Edmonton region, by the early 80s we expanded our operations across the province. This expansion included our work on the Yellowhead Trail. With excavation work now forming the backbone of Sprague-Rosser, we were involved in the development Scotia Place and Eaton Centre, and along the 1982 LRT extension from downtown Edmonton to the Clairview Station (approximately 10 kilometers of track).

With the economic trials of the 80s mostly behind us, the early 90s proved to be an interesting time for construction. To meet with new demands Sprague-Rosser's scope of work expanded to include: water treatment plants, rehabilitations, upgrades and freeways.

Since 1995 our trucking section has supplied sand and gravel to numerous municipalities. In 1997 we were contracted to take part in the building of multiple phases of the Edmonton International Airport; and five of the Walmart stores in the capital city. This diversification gave Sprague-Rosser the ability to make it through the lean times as well as prosper in the boom times here in Alberta and saw us taking on new and exciting projects like the rehabilitation of 99 Street and the Ritchie Neighbourhood Project.

The new millennium launched with a growing list of clients and projects that called on our equally diversified set of skills. These included site grading for the Tri-Municipal Leisure Centre in Spruce Grove, excavation and slab preparations at the University of Alberta ECERF Building, NAIT and the WCB Millard Centre. With our founders transitioning to retirement, Earl Sprague took over at the helm of Sprague-Rosser. With this new energy we began to diversify our scope once more, branching into underground and site services as well as subdivisions.

It is a busy time for construction in Alberta. Sprague-Rosser Contracting has a number of short and long term projects currently underway. Among these projects are: the three stages of the Edmonton LRT South Extension, urban rehabilitation of the Lancaster Park neighbourhood , the rehabilitation of CFB Edmonton and the excavation and demolition work for the Centennial Centre for Interdisciplinary Science.