The Arkansas Highway and Transportation Department awarded the joint venture of Weaver-Bailey and Manhattan Road & Bridge the $78 million contract to construct Phase III Interchange improvements at I-430/I-630. Weaver-Bailey’s portion of the project required 141,286 square yards of 13” thick concrete and 41,460 linear feet of retaining wall. Additionally, the preparatory items of removal and disposal of existing concrete, earthwork preparation and subgrade. This portion along with Manhattan Road & Bridge work became known as the “Big Rock Interchange.”