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

SR 120 Singleton Creek Bridge

Gwinnett County, Georgia

I-285 @ SR 400 Interchange

Sandy Springs, Georgia

SR 6/Thornton Rd. (Truck Friendly Lanes)

Cobb and Douglas Counties, Georgia

Services

Utility Designating

Utility Coordination

Electromagnetic Tracing

Ground Penetrating Radar

Utility Records Research

Vacuum Excavation/Test Holes

ADDITIONAL PROJECTS

Courtland Street Bridge Replacement

Atlanta, Georgia

This was a design/build, accelerated bridge replacement project in the heart of Georgia State University. Car and foot traffic was extremely high so any work performed had to be shielded from the public. Long supplemented the existing SUE data with refined QLB and additional test holes. Long completed test holes, designated over 500 ft. of service lines and provided water line design. Long also assisted the contractor (CW Mathews) with utility coordination services that involved weekly meetings on the progress of utility relocations.

SR 120 Singleton Creek Bridge

Gwinnett County, Georgia

This urban area roadway widening and bridge replacement project consisted of Quality Level B utility locates complimented with a Utility Impact Analysis (UIA) for more than 10 different utility owners. This one mile project presented several challenges - utility congestion, heavy traffic and a newly installed gas line were just a few of the issues. More than 40,000 feet of underground utilities were located and 50 conflicts identified that allowed the designers to design around existing utilities.

I-285 at SR400 Interchange

Sandy Springs, Georgia

This interchange modification includes several new ramps, frontage roads, and fly-overs along the I-285 and SR 400 corridor. LONG provided utility coordination, Quality Level A and B, manhole inventory and other miscellaneous services. More than 250 test holes were completed that enabled the contractor to successfully coordinate utilities.

SR 6 / Thornton Road (Truck Friendly Lanes)

Cobb and Douglas Counties, Georgia

This 5.6-mile urban roadway widening project consisted of Quality Level D and Quality Level B SUE throughout. Quality Level D was completed first. This allowed the designers an opportunity to see what was out there and to prepare their design around any significant utilities. Quality Level B followed and gave a much more precise location of each utility so the designers could fine-tune their design. In all, over 250,000 ft. of underground utilities were designated, surveyed and mapped. This included an inventory for 700 poles and 150 sanitary sewer manholes that were dipped and connected. The final deliverable was a set of utility plans, complete with sanitary sewer layout and a pole data table.

Subsurface Utility Engineering

Courtland Street Bridge Replacement

SR 120 Singleton Creek Bridge

I-285 @ SR 400 Interchange

SR 6/Thornton Rd. (Truck Friendly Lanes)

Services

ADDITIONAL PROJECTS

Lift Station 28 Force Main

I-285 Ramps @ CR 209/Riverside Drive

CR 251 Over Shoal Creek Trib PL#0015929

Joseph Boone Blvd

Green Infrastructure-Clear Creek Vault

SUE - Substation-Peachtree 230/115/120

Horizon South Parkway-PO 13853

HJAIA Airside Erosion Repair

Georgia Institute of Technology Living Building - Site Utilities

SR 54 @ Shoal Creek - PI 0013930

SR 42 @ S Fork Peachtree Crk- PI 001399

Marta Tunnel Test Holes

Brampton Connector

CR 313 Over Deep Creek Pl#0015926 WO-001

I-75 at Wade Green

SR 21 Pedestrian Bridge - LS

M0120.10 Crooked Creek WRF CP-4- Task 3

Patterson FM

Sycamore Road

SR 14 Spur from S of SR 109 to SR14/US29

PMC Task Order #9

RM Clayton Headworks - PO 4500507219

Property at 1470 Spring Street

SR 37 @ Cool Springs Rd - PI 0009855

SR 515/US 76 Blairsville to Young Harris

SR 133 - T.O.#5-Job # 1

I-20 Savannah River Bridge

SR 21 Culvert Widening

Mercer University - Science Building

Chamblee Dunwoody Road - Phase 2 - LS

Mims Park - SUE - PO 11766

SR 520 @ Flint River - PI 0013992

Airport GPR - CWM

ATL Fall Protection Platform - HJAIA

I-285 @ Camp Creek Parkway

Courtland Street Bridge Replacement

SR 120 Singleton Creek Bridge

I-285 at SR400 Interchange

SR 6 / Thornton Road (Truck Friendly Lanes)