SUBSURFACE UTILITY ENGINEERING

Critical to the design and construction of roadway and aviation infrastructure and building improvement projects is our underground utility locating services. A full array of tools are used in this process to provide accuracy in identifying their location including radio detection designating equipment, ground penetrating radar, and a Utilivac and vacuum excavation truck to pothole existing utilities to determine their exact location, size and elevation.

Courtland Street Bridge Replacement

Atlanta, Georgia

15th Street Substation

Augusta, Georgia

Clear Creek Green Infrastructure Project

Atlanta, Georgia

Downtown Savannah Streetscapes Improvements

Savannah, Georgia

I-20 at Savannah River Bridge Replacement Project

Richmond County, Georgia
Aiken County, South Carolina

MMIP SR400 Express Lanes

Fulton and Forsyth Counties, Georgia

Georgia Ports Authority

Savannah, Georgia

Hartsfield Jackson Atlanta International Airport – Hotel

Atlanta, Georgia

Hartsfield Jackson Atlanta International Airport – Plane Train Extension

Atlanta, Georgia

MARTA Tunnel Project

Atlanta, Georgia

Mercedes Benz Stadium

Atlanta, Georgia

Mt. Vernon Highway to Abernathy Line

Sandy Springs, Georgia

Sandy Springs Center

Sandy Springs, Georgia

Savannah Forsyth Park

Savannah, Georgia

Westside Park at Bellwood Quarry

Atlanta, Georgia

MARKET SECTORS

Governments
(State, Local, and Federal)
Developers
Contractors
Consultants
Utilities
(e.g. Water/Sewer, Gas/Petroleum, Power/Electric, Cable TV, Telecom)

SERVICES

Quality Levels (QLD-QLA)
Ground Penetrating Radar (GPR)
Utility Coordination (UC)
Utility Impact Analysis (UIA)
Sanitary Sewer Inventory
(to obtain Inverts & Connectivity)
Pole Data Table

Courtland Street Bridge Replacement

Atlanta, Georgia

The Courtland Street Bridge Replacement project is located in the City of Atlanta near the Georgia State Capitol building and serves as a major thoroughfare through the downtown campus of Georgia State University (GSU). The Georgia Department of Transportation (GDOT) estimates it sees traffic from thousands of motorists, including more than 30,000 students and staff at GSU. Originally built in 1906, the bridge crosses over two Metropolitan Atlanta Rapid Transit Authority (MARTA) tracks, two CSX Railroad tracks, and Decatur Street. Under the original design-bid-build concept, the closure duration for the reconstruction of the bridge would have been at least 18 months but by using design-build and Accelerated Bridge Construction, the total roadway closure time was five months. Two of the most important goals for this project were to preserve the historical aspects of the original bridge while also reducing the impact that construction would have on the local community, especially considering the central location of the bridge in the middle of downtown Atlanta. To further reduce congestion in the area, the new bridge also added a 12-foot bus lane and expanded sidewalks. Total replacement costs were approximately $21 million. GDOT was recognized by the Design-Build Institute of America (DBIA) for exemplary work on this project.

LONG provided surveying services for the design and construction to install the new bridge between Martin Luther King Jr. Drive and Gilmer Street. LONG provided a roadway database featuring survey for 1600 linear feet along Courtland Street from face of building to face of building, as well as 1000 linear feet under the Courtland Street Bridge from face of building to face of building. Additional surveying services included establishing survey control and developing a survey control package in accordance with GDOT standards.

LONG also provided utility locates and utility coordination as well as a utility impact analysis. LONG supplemented the existing SUE data with refined QLB and additional test holes. Because the construction schedule was so constricted, utility avoidance was critical. Unknown utilities had to be located and dealt with in a matter of days. LONG assisted the contractor (CW Mathews) with coordinating each utility with over 10 different owners. Service lines were the contractor’s biggest problem. Not only were they not shown on the plans they were non-tonable. LONG designated laterals and performed more than 10 THs on service lines alone.

Location

Atlanta, GA

Client

Michael Baker International, Inc.

Services Provided

Land Surveying, Subsurface Utility Engineering (SUE), and Utility Coordination

Date Completed

2018