INTEC Group LLC

Scope Of Work

The work includes the demolition of existing wooden trestle railroad
Bridge 49 north of Ft. Campbell, KY. A new 410' concrete structure
replaced the old wooden trestle bridge. New construction consisted
of building a new access road to the bridge location, clearing approx.
two acres of trees and vegetation, we installed new H-Piling by means
of foundation drilling and concrete encasement, placed concrete
footings and pier construction, erected new prestressed concrete
beams, placed an 8" concrete deck. And installed and connected the
railroad track. Other aspects of this project included but not limited
to erosion control, stream bank stabilization, and rerouting an existing
stream. The Trestle Bridge Replacement project was a complex
structural project that included extensive civil work.
The project was originally awarded as a Design/Bid/Build. After
contract award, our team approached the COE with a Value
Engineering proposal which converted the project into a Design/Build
contract. The original design had a structure supported with Precast
Beams that typically are not manufactured in this area and specified
the use of Ultra High Performance Concrete (UHPC) for the closure
pours. During research, our team found that while UHPC had many
pros, one of UHPC's downfalls was its failure rate to meet required
compression strength. This was a risk that INTEC Group wanted to
eliminate to prevent schedule impact. Our Value Engineering
Proposal proposed the use of conventional concrete -beams tied
together with a reinforced concrete slab in lieu of the Precast I Beams
and UHPC. This tried-and-true construction method utilized concrete
with a compressive strength requirement of 4,000 psi rather than
UHPC. The concrete beams were manufactured in the area. The
4,000 psi concrete was available locally, and the construction team
was much more familiar with pouring slabs on top of beams rather
than closure pours between beams.
Engineering proposal eliminated the issues associated the Precast I
Beams and the UHPC and made meeting the project schedule
constraints more achievable and controllable. The value engineering
redesigned was performed by Palmer Engineering in Lexington,
Acceptance of our Value