F.A.U. Route  7158, Mattis Avenue Over F.A.I. 74

The Illinois Department of Transportation entrusted Bacon Farmer Workman (BFW) with the bridge replacement and roadway rehabilitation of the F.A.U. Route 7158, Mattis Avenue over F.A.I. 74. To complete this project, the existing structure, consisting of a two-span 48″ web steel plate girder bridge supported by open stub abutments on concrete piles and multi-column reinforced concrete piers on spread footings, had to be removed, and the proposed two-span (141’-1” / 169’-7 ½”) continuous welded steel plate girder (70” web) structure on multi-column piers and stub abutments had to be constructed.

• Old Bridge Structure:
  • 249′-10 ¾” back-to-back abutments
  • 71′-7″ out-to-out deck
  • 40°-51’-29” left forward skew
• New Bridge Structure:
  • 320’-1 ¾” back to back abutments
  • 84’-0” out to out deck
  • 41°-19’-30” left forward skew

To avoid delays, the construction was accomplished in stages. During Stage I, two lanes of traffic were maintained by utilizing a portion of the existing structure. While for Stage II, the portion completed during Stage I would be used to maintain one lane of traffic. To follow IDOT Bridge Manual Sec. 3.2.8 for spans exceeding 150 ft., the positive and negative moments shall be poured separately. In addition, mandatory transverse construction joints will be designated for construction of the proposed abutments and detailed according to the 2012 IDOT Bridge Manual. Temporary Soil retention will be designated for construction of the proposed pier. The soil nail wall will be constructed after completion of Stage II construction which will limit the length and retained height of temporary sheet piling at the north abutment and eliminate the need to stage the construction of the soil nail wall. BFW is proud to be able to assist in improving the transportation infrastructure for the Illinois Department of Transportation.