Indianapolis Engineers Professional 8126 Castleton Rd Beam, Longest and Neff L.L.C. has over 60 years experience as one of Indiana's leading engineering firms. Indianapolis IN Engineers Professional Beam Longest and Neff www.b-l-n.com engineering design transportation engineering bridge design environmental engineering structural services Land planning services survey services environmental services right-of-way engineering right-of-way services construction observation engineering design transportation engineering bridge design environmental engineering structural services Land planning services survey services environmental services right-of-way engineering right-of-way services construction observation Business Reviews Beam Longest and Neff Testimonials