The phrase "a three year project" is correct and usable in written English.
It can be used to describe a project that has a duration of three years.
Example: "The company has initiated a three year project aimed at improving sustainability practices."
Alternatives: "a three-year initiative" or "a three-year endeavor".
We just completed a three year project with the Lemelson Foundation.
Project PAAVE (Providers Asking About ViolencE) was a three year project designed to increase the rate of screening for domestic violence by primary care providers.
The Development of a European Measure of Best Practice for people with longer term mental health problems in institutional care (DEMoBinc) was a three year project funded by the European Commission from March 2007.
These funds are: a three year project grant (ID: 253636) for the overall project administration base in Sydney, and a Sidney Sax Public Health Postdoctoral Fellowship (ID: 245521), based in Oxford and Sydney.
The FoodRisC project http://www.foodrisc.org is a three year project which started in June 2010 and aims to progress beyond the current state of the art in a number of these areas.
The protocol makes available 7 million dollars for a three-year project through which UNICEF will offer technical assistance for reinforcing the institutional capacity of the Ministry of Education in the planning and management, and in implementing educational reforms.
"A three-year project gets done in eight months".
One of the highlights of the season will be the culmination of a three-year project to fully restore nine of the director's silent films.
In 2007, Steel finally published his dissertation research — "I joke that it took me ten years to write up a three-year project," he said — but in the intervening years he continued to pursue the link between procrastination and impulsivity.
Barry Lyndon was a three-year project, with a year of preparation, and eight months of shooting.
A provincial PHC Re-engineering Strategy and a three-year Project Implementation Plan followed soon afterwards, with all four districts subsequently integrating the strategy into their District Health Plans.
