Gas main and service replacement work throughout historic district at Lincoln Home NHS
The current steel pipes will be replaced with polyethylene and the meters inside the buildings will be replaced. Where the lines come into the buildings, service holes up to 2' x 2' will be created along the foundations.
Bore pits will be created at the intersection of Capitol Avenue and both east and west alleys in the park. A pit will also be dug in the alley between the Dean House (HS-13) and the Visitor Center (S-31) to service both buildings. Pits will also be needed directly east of the Conference Center (HS-30), Lincoln Home Carriage House (HS-01A), and the Arnold House (HS-20) in the alley.
Ameren has agreed to excavate all the bore pits at the same time so that an archeologist under contract with the park, can monitor the excavation. Ameren will then place "road plates" over the pits to allow for general auto use. When completed, the pits will be filled with sand and flowable fill and topped with either asphalt or concrete to match the surrounding roadway.
Attached images were taken with the photographer standing about where the pit would be created, looking toward the building where the gas line would be bored.
Jason Taylor, 217-391-3235
Ameren Gas, the city of Springfield's gas company, will be replacing gas meters and mains at six locations mostly on the north end of the park. To replace the mains, bore pits approximately 5' x 5' will be excavated in the alleys along the edges of the historic area, and bore lines will be created from the pits to the buildings. The bore lines will be created at a depth lower than 36" to avoid damaging potential archeological sites in the yards within the historic area with the exception of the last few feet that will need to rise up to the foundation of the buildings. The new lines are required by law to be 2' away from the current lines to avoid damaging the active gas line. Ameren will locate all underground utilities prior to the project starting. They will also be checking the current sewers and pipes via camera prior to the project starting to clarify their maps and avoid having to create more pits than needed.