OREANDA-NEWS. National Rating Agency (NRA) has lowered its financial strength rating on Construction Sector Insurance Group LLC (CSIG) to ‘CC+’. The outlook for the rating is Negative. CSIG was assigned NRA’s first-time rating of ‘BBB+’ in 2009. The latest rating action on the company (rating downgrade to ‘B+’ with a negative outlook) was on June 6, 2016.