Is Zakat obligatory on the 103,000 remaining from a loan for a project that was not completed, knowing that the original loan was 116,000 and part of it was withdrawn out of necessity during the year?

If you do not possess any zakatable money other than the mentioned amount, and you do not own other funds exceeding your basic needs that could cover the debt, then no zakat (definition) is due on this amount. This is because debt prevents the obligation of zakat on hidden wealth, such as cash. However, if you have other surplus funds sufficient to repay the debt, then assign them against the debt and pay zakat on the entire amount. If it suffices for only part of the debt, then deduct the remaining debt from this amount, and zakat is paid on the remainder if it reaches the nisab (definition).