INNOVATION IN ROADS
Beam, Longest and Neff, L.L.C.
I- 69 at state road 61/56
located near petersburg, Ind., the junction of I- 69
and State road 61/56 was originally designed as
a traditional diamond interchange. Beam, longest
and neff proposed a cost reduction initiative that
flipped the layout so Sr 61/56 passed over I- 69
instead of under. The company executed the $17.5
million redesign while working within the Indiana
Department of Transportation’s right-of-way
restrictions and completion deadline.
During the design phase, Beam, longest and
neff coordinated closely with the original design
consultant, which also used Bentley software.
This aided communication among all parties and
ensured compatibility and efficiency in the design
process. During redesign, the project transformed
from traditional design-bid-build to fast-track
design-build. Time-saving measures were critical
microStation, GeopAK, le Ap conSpAn, and le Ap
rc-pIer facilitated timely redesign, plan review,
and submittal. one change alone reduced the area
requiring rammed aggregate piers by 99 percent.
overall, the Bentley software accelerated design
changes, reduced duplicate work, and promoted
effective information exchange. The redesign
reduced construction costs by $5.5 million and
construction time by 2. 5 months.