Heavy Civil

HC Aiken Emergency Design Build Bridge Replacement

Heavy Civil

Client Type: Public Entity
Laurens Street, Aiken, South Carolina - $2.3 million

Crowder removed an existing, flood-damaged bridge over Norfolk Southern Rail Road track, and replaced with a new structure in this Emergency Design Build Project. Because of time constraints, our team designed and constructed a bottomless culvert. The new foundations consisted of driven 18” pipe pile to depths up to 62 feet; Heavy footings were installed for the end bents and wing walls. Because of the tight working area shoring was installed to complete the excavation on both sides of the new structure. Once all the concrete walls were poured we installed 18 precast arches over Norfolk Southern railroad. The entire structure was back filled with stone and the new roadway installed over the arches. 

HC Cabarrus Mecklenburg Railroad Bed Improvements

Heavy Civil

Client Type: Public Entity
Harrisburg, North Carolina - $30 million

12.2 miles of Railroad construction including clearing and grubbing, excavation and grade work, jack and bore piping, concrete structures, three bridge replacements, arch culvert construction, asphalt placement, intersection modification work, fencing, erosion control, signal and communication work, track bed installation and seeding and mulching. Ultimately, the project will widen 10.2 miles of track bed for NCDOT/ NCRR. 

HC Charleston Finger Pier and Deployment Staging Area, Naval Weapons Station

Heavy Civil

Client Type: Public Entity
Charleston, SC - $4.4 Million

Crowder’s work on this project included the installation of 113, 20-foot pre-cast concrete piles, each between 92 and 100 feet tall. These piles served as the backbone for the pile cap and surface concrete to be proud onto stay-in-place decking. Crowder formed and proud pile caps and set pre-cast beams to facilitate the construction of the new deck and ramp. The project also included the installation of conduit, piping, electrical and water distribution for the new pier section and ramp. In addition, this project included the construction of a new guardhouse and gates, as well as work fencing and lighting additions.

HC Charleston Seawall

Heavy Civil

Client Type: Public Entity
Charleston, SC - $2.75 Million

Crowder Construction Company secured a part of history as the selected contractor for Phase I of the Battery Reconstruction and Repair project to repair significant deterioration to the portion of the Historic Battery Park Seawall in Charleston, SC known as "The Turn." The original palmetto log seawall was destroyed during an 1804 storm and rebuilt in stone in 1820. In 1893, a hurricane again brought about measures to strengthen the wall.

The current project consisted of removing 120 foot section of the high battery wall that was constructed during additional improvements in the early 1900’s. Crowder removed a hollow concrete earth-filled section founded on timber piles and timber decking. Once the old wall was removed, 74 composite piles were placed followed by placement of the new low coulomb concrete seawall in five lifts.

Finally, conversion of the walk-up leading to the turn’s platform from concrete steps to an inclined walkway was completed, making it more convenient for public use and accessible by all. The new concrete seawall, designed to last 100 years, was dedicated on June 20, 2014.

HC Charleston US 78 & SC 7 Bridges

Heavy Civil

Client Type: Public Entity
North Charleston, South Carolin - $35 million

The project is a multi-bridge A+B project.   Crowder is in the process of replacing the 860-foot, SC-7 bridge at Cosgrove Avenue in North Charleston, which is the second bridge in this project. This bridge is 72 feet wide and contains 20 drilled shafts; each are 100 feet long.   It also includes 42-inch diameter stone columns at each approach, along with earthquake drains, and HP14x73 pile at each end bent.  This bridge spans Meeting Street, existing CSX and Norfolk Southern railroad tracks and an active concrete plant.    Also included in this project grading, MSE walls, stone columns, earthquake drains, paving, fence and electrical.

The completed US-78 bridge at Rivers Avenue is 1,200 feet long, 44 feet wide, with an S-curved shape. It contains 13 drilled shafts, two of which are 175 feet long, as well as 36-inch diameter stone columns at each approach and a 24-inch pile at each end bent. Demolition of this bridge was completed over Meeting Street and multiple existing CSX and Norfolk Southern railroad tracks. . The concrete portion also includes two large crash walls to protect the bridge foundation from derailed trains.

The project has been constructed to span multiple future tracks in addition to the existing tracks going into the Charleston Port.

HC Chattooga River Bridge Replacement

Heavy Civil

Client Type: Public Entity
Oconee County, SC - $6.1 Million

This project replaced the bridge on US Highway 76 and included demolition of a 100-year-old abandoned steel truss bridge over the Chattooga River. The Chattooga River is part of the National Wild and Scenic Rivers System and forms the boundary between South Carolina and Georgia. Demolition of the existing bridge had to be coordinated around the U.S. Forest Service (USFS) water monitoring gauge, located on an existing pier of the old bridge. Daily work schedules had to be coordinated with USFS, SCDOT, DHEC and representatives of the Chattahoochee (GA) and Sumter (SC) National Forests. Crowder received the 2007 Pinnacle Award for Best Highway-Heavy Project for their work on this project.  

HC Elon Pedestrian Tunnel under Norfolk Southern Track

Heavy Civil

Client Type: Public Entity
Elon College, Elon, North Carolina - $2 million

Crowder installed a 60-foot section of cast-in-place pedestrian tunnel under a section of Norfolk Southern Railroad in Elon, North Carolina. The access on each side of the tunnel was constructed with a ramp and a stair set, each having opposing entrances, providing four (4) entrances to the tunnel. The tunnel allows students of Elon University to walk to school on the north side of the track from student housing located south of the track without crossing this dangerous section of high speed railroad.

HC Lake Michie Dam Repairs

Heavy Civil

Client Type: Public Entity
Durham County NC - $862,000

Crowder was responsible for repairs to the concrete face of the Lake Michie Dam, originally built in 1923. The repairs required the Crowder team to rappel over the deteriorating spillway. Despite this challenge, Crowder completed this project without safety issues. Crowder was responsible for repairing and strengthening the dam, including repairs to the earthen and concrete dams, including galley steps, doors and cosmetic repairs to the hydro-electrical building.

HC Lake Townsend Dam

Heavy Civil

Client Type: Public Entity
Greensboro, NC - $14.9 Million

This project involved the construction of a new Labyrinth Spillway and partial demolition of the existing dam. Reedy Fork Creek had to be diverted away from the work area before construction of the new dam could begin. A diversion wall of steel plate and piles was constructed parallel to the creek and a cofferdam and access bridge was installed downstream of the site. In excess of 350,000 cubic yards of material was moved during the earthwork portion of the project and more than 10,000 cubic yards of concrete were placed, incorporating over 1.5 million pounds of reinforcing steel. This process required more than 100 concrete pours and was performed in six months.

HC Lenoir Raw Water Pump Station

Heavy Civil

Client Type: Public Entity
Granite Falls, North Carolina - $4.8 Million

At the George L. Bernhardt, Sr. WTP, Crowder constructed a raw water intake and pumping station which required excavation to be performed at a depth of 44 feet.  The wet well was constructed using a circular steel sheet pile cofferdam. Rock within the excavation limits necessitated pre-drilling activities; and both drilled casing and controlled blasting techniques were utilized to advance the piling to the required elevation.  Sheet piling along the intake pipe corridor from the wet well extended out into Lake Rhodhiss for a distance of 340 LF to depths of approximately 40 feet allowing excavation and installation of twin 36” PCCP intake pipes, air bursting pipe and passive intake screens, some of which were founded on driven H-pile and cap assemblies.  The intake screens and supports were installed using underwater welding of the steel caps to the steel h-pile. Both 36” PCCP intake pipes were installed using divers while being supported by crane and barge access. All dive work was at depths of 30’ below the water’s surface.

The station included twin vertical turbine pumps with air bursting equipment as well as dry chemical feed equipment, grit removal and traveling bridge crane all housed in a masonry shell structure. The project also included raw water piping from the new pumping station to the head of the plant.

HC NC Division 11 Multi-Bridge Design Build

Heavy Civil

Client Type: Public Entity
Ashe, Avery, Caldwell, Watauga & Wilkes Counties - $9.5 million

Crowder is responsible for the design, construction and management of the replacement of fifteen low impact bridges. The bridges are located in Ashe (two (2)),  Avery (four (4)), Caldwell (one (1)), Watauga (two (2)), and Wilkes (six (6)) Counties and range in length from 35 feet to 125 feet, with average bridge length at 60 feet.  The project includes: Design Services, Construction Services, Permits, Utility Coordination, Right of Way acquisition, Construction Engineering & Inspection and were completed in a little over three years.

HC NC Division 9 Multi-Bridge Design Build

Heavy Civil

Client Type: Public Entity
Davidson, Forsyth, Rowan & Stokes Counties, North Carolina - $12.5 Million

After being shortlisted, and submitting a design-build bid to NCDOT, Crowder was awarded the design, construction and management of the replacement of nine (9) bridges. located in in Davidson (four (4)), Forsyth (one (1), Rowan (three (3)) and Stokes Counties (one (1)).  Project has included: Design Services, Construction Services, Permitting, Utility Coordination, Right of Way Acquisition, as well as Construction Engineering & Inspection. These low-impact bridges range in length from 70 to 410 feet, with the average bridge length at 175 feet and have been designed and constructed in a little over 3 years.

HC Raleigh Convention Center

Heavy Civil

Client Type: Public Entity
Raleigh, NC - $16.9 Million

Crowder was awarded the structural concrete package to construct the Raleigh Convention Center in downtown Raleigh, North Carolina. Crowder worked closely with the Construction Manager at Risk (the Skanska-Barnhill Joint Venture) to allow fast track construction of the structural activities. Crowder performed structure excavation for footings and grade beams, walls, beams, pan slabs, elevated slabs and slabs-on-grade. Included in Crowder’s contract was the deep excavation and placement of the permanent dewatering manhole, all while keeping project access open for deliveries. Crowder provided large span shored openings to allow project traffic to move under the array of shoring and formwork. Crowder constructed a vehicular bridge along Salisbury Street and a utility tunnel with cast-in-place beams covered by pre-cast sections that housed utility piping and provided a sidewalk for pedestrians along Cabarrus Street. Special features of this project included more than 24,000 cubic yards of concrete placement, 800 tons of reinforcing steel and more than 12,000 tons of stone aggregate. Crowder’s work on this project was completed on schedule and within budget.

HC Roanoke Pedestrian Trail & Bridges

Heavy Civil

Client Type: Public Entity
Roanoke, Virginia - $3.3 million

Crowder constructed a mile long recreational nature trail and two pedestrian bridges - including: channel improvements, snag and debris removal, training walls, slope protection, and utility, road and building relocations and landscaping to reduce flood hazards, damages, and associated negative social and economic impacts. Crowder Installed Two, steel-truss pedestrian bridges over the Roanoke River. One structure was a two-span bridge over 250 feet long and the other a single span bridge over 217 feet long. The trail consisted of over a mile of paved walking surface with landscaping including wooden and wrought iron fencing. To prevent water from backing up behind the trail embankment as well as to improve drainage, 24 inch concrete pipe and 5 foot diameter manholes, with associated headwalls, and slope ditches were installed leading water back into the Roanoke River.

This project helped provide beautification to a somewhat depressed area in the old industrial area of Roanoke.

HC Sumter US-15 over CSXT Railroad - Bridge Replacement

Heavy Civil

Client Type: Public Entity
Sumter, South Carolina - $12 million

This almost 900 foot long bridge replaced a 50 year old structure that had seen better days.  The work consisted of two large MSE wall abutments, 34 drilled shafts and a combination of 72’’ bulb tee and 60’’ continuous steel girders. Over 1000’ of roadway approach work including curb and gutter and sidewalks created a pedestrian friendly facility. This work took place over two active roadways as well as two active CSXT railroad tracks.

 

HC Wharf Repairs, Attenuator Wall & Floating Dock

Heavy Civil

Client Type: Public Entity
Sunny Point Military Ocean Terminal, Southport, NC - $1.9 million

Demolition of the existing floating dock and attenuator system which was destroyed by a storm in 2009 and installation of a king pile and sheeting attenuator wall, and the installation of new floating dock sections with electrical, water, and lighting.  The dock is used to house the patrol boats that provide security for the terminal.
 

Table Rock Dam Intake Structure

Heavy Civil

Client Type: Public Entity
Cleveland, SC - $7.6 Million

This was a technically complex project involving the construction of a screen system and new water intake structure capable of supplying 35 MGD. Crowder worked closely with the engineer to determine the most economically and environmentally sensible way to accomplish this project. Crowder self-performed 75% of the construction on this project, which included the installation of two new screens with a backwash system. The project was completed with pinpoint accuracy, zero lost-time injuries and no impacts to the environment. This Crowder project was awarded the 2005 Carolinas AGC Pinnacle Award for “Best Utility Project,” and the National AGC Marvin M. Black Excellence in Partnering Award.