Microtunneling Bradshaw Company Maryland TUNNELING SPECIALISTS SINCE 1963      
 

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  1JV1 - East Bay/Calhoun Drainage Facilities Division I - Collection Tunnel System

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LOCATION

OWNER

GEOLOGY

DIMENSIONS
Shaft Work Concrete Caisson Charleston, SC City of Charleston Soft Ground 16' - 30 'Ø x 130VF - 150VF
SUMMARY: BTM Joint Venture, led by Bradshaw Construction, managed the construction of two (2) cast-in-place caisson shafts constructed in downtown Charleston, SC. The project was the first phase of flood control instituted by the City. The first caisson was 30’ ID x 150’ deep at Concord St and served as a tunnel mining shaft and future pump station. The second caisson was 16’ ID x 130’ deep in... Complete Project Profile

  324 - Cohas Brook Interceptor - Phase 1

PROJECT TYPE

SUB TYPE

LOCATION

OWNER

GEOLOGY

DIMENSIONS
Shaft Work Concrete Caisson Manchester, NH City of Manchester Mixed Face 10' - 14' x 40VF - 60'VF
SUMMARY: As part of a microtunneling project Bradshaw installed two caissons: a 14’ ID x 40' deep jacking shaft and a 10' ID x 60' deep receiving shaft. They were constructed using precast concrete segments and fitted with steel cutting shoes. They were sunk under their own weight, by excavating the soil with a crane & clam bucket. The lower portions were excavated subaqueous and the bottom slabs were... Complete Project Profile