ACTT Workshop: Georgia
I-75 from SR 54 North to Aviation Boulevard - for HOV Lanes
Chapter 3: Skill Set Recommendations
Total Directional Closure & Interchange Closures
- Close one direction at a time and use alternate routes.
- Use I-20 to I-285 to I-675 as the primary alternate.
- Include specified maximum closure times and the appropriate incentives/disincentives.
- Consider partial closures if total closure isn't feasible.
- Widen the outside southbound first and shift traffic to the widened area; then close the northbound totally.
- Allow two lanes for northbound traffic in the southbound area (counterflow).
- Consider other partial closure scenarios.
- Perform any preliminary work ahead of mainline work.
- Do preparatory work on primary alternate route: I-675 at I-75.
- Add acceleration/deceleration lanes.
- Extend the six-lane section south to the I-75 merge.
- Consider other work:
- Overpass structures.
- Drainage, grading and fencing.
- Retaining walls and sound walls. Consider precast, prefabricated and standardized.
Public Involvement/Public Relations
- Involve major stakeholders early and keep them informed as part of the process.
- Conduct a major PR campaign for closures.
- Get information to tourists.
- Consider incentives like free express buses.
- Consider elevated HOV lanes in restricted areas:
- At interchanges for HOV access/exit.
- In environmental areas, i.e., wetlands.
- Shift centerline and alignment.
- Could be either temporary or permanent.
- Would facilitate lane closures, traffic flow and geometrics.
- Use incentives and disincentives, A-plus-B contracting and interim completion dates.
- Consider lane rentals and design-build (D-B).
- Make Value Engineering (VE) proposals more attractive.
- Coordination of FAA Project @ Aviation Blvd
- Consider DOT construction management for the whole corridor.
Project Administration Streamlining
- Use submittal processing.
- Have higher approval authority for contract change orders at the project level.
- Have an active advisory team.
- Use electronic document control.
- Conduct regular tests and inspections.
One Total Construction Contract
- Use one contract to facilitate coordination and expedite the construction process.
- Use special prequalifications.
- Hold a mandatory pre-bid conference.
- Make advance plans available.
- Hold reviews beginning at the early design stage.
- Include industry, DOT, FHWA, FAA, the Atlanta Airport, utilities, environmental agencies and other major design stakeholders in the process.
The geometrics team recommended using barrier-separated HOV where possible because of safety, operational, enforcement and pricing concerns:
- Build the barrier section with the expectation of having two HOV lanes; buy ROW and build the structure cost effectively.
- Eliminate the slip ramps at JC Penney and Lynwood Drive. This would address safety issues and eliminate operational problems caused by weaves to the slip ramps from the mainline.
- Improve secondary roads and connections to provide easier access to the HOV lanes.
- Allow one to three miles between drop ramps: proper HOV interchange spacing would reduce turbulence and provide the best access to the HOV interchange.
- Consider a full diamond interchange at Aviation Blvd.
- Construct a split diamond HOV interchange at Bob White northbound and Old Dixie southbound.
- Provide wishbone access from the I-75 HOV lanes to the C-D roads to I-285, since the connection between the I-75 HOV lanes and I-285 is imperative.
- Do not use D-B: the complexity is too great.
- Coordinate with Transit and Park & Ride.
The team made the following structure joint notations:
- The C-D system/wishbones/elevated interchange with I-285 will be dependent upon funding.
- Realignment of I-75 to the west in the northern portion would be expensive.
- They would prefer a half-diamond HOV interchange at Bob White Trail, north side. (Local roads must still be reworked.)
- Realignment of Forest Parkway is recommended to facilitate traffic flow during construction.
3.3. Innovative Contracting and Financing
- Identify new financing sources.
- Consider public-private partnerships (PPP) - private equity or debt.
- Use the Fast Forward bonding program.
- Bonds should be applied to the construction phase.
- Bonds would be repaid with State and Federal funds.
Prioritized Financing Recommendations
- Encourage private participation in a PPP with a toll facility. Public-private transportation legislation is in place.
- Reallocate resources/funding to accelerate the project.
- Build and manage a toll facility (100% public funds).
- Implement a sales tax, a user fee based on a defined area or a mileage fee based on miles driven.
- Apply for TIFIA, Transportation Infrastructure Finance & Innovation Act Federal credit assistance.
- Use SIB loans - would require State legislation and a capitalization source.
- Issue tax-exempt bonds through Section 63-20 and/or proposed Private Activity provisions.
- Fund construction sooner with GRB by reallocating bond proceeds from other projects.
- Include HOT (High Occupancy Tolls) or TOT (Truck Only Tolls) for tolling concept.
- Shorten the schedule.
- Minimize the impacts to traffic.
- Guarantee quality.
D-B (Design-Build) Option
- Eliminate the $10 million statutory cap.
- Award a single contract.
- Assign dedicated project management personnel.
- Consider a PPP contract that includes finance, operations and maintenance.
D-B-B (Design-Bid-Build) Option
- Assign a dedicated project manager.
- Perform a third-party constructibility review.
- Allow contractor-designed traffic staging/management.
- Use D-B for specific features.
- To implement Fast Forward, augment program delivery capability.
- GDOT staff.
- Use cost-plus-time (A-plus-B) bidding to shorten the schedule.
- Solicit alternate bids when there's no change in the environmental impact.
- For D-B or PPP delivery, use a two-step best-value selection process featuring cost and other factors. Amend State legislation, if necessary.
- For D-B-B delivery, use special prequalifications to shortlist qualified contractors.
- Use incentives and disincentives for construction time.
- Implement traffic management incentives and disincentives.
- Use lane rental: assess daily/hourly rental fees for taking lanes/ramps out of service.
- Use travel time: compensate the contractor for reduced travel time, or assess contractor for excess travel time.
- Provide temporary transit alternatives during construction.
- Use the following to accelerate construction:
- Advisory team issue resolution (during design and construction).
- Mandatory pre-bid meeting.
- Pre-construction workshops with third-party coordination.
- Public outreach.
- Include quality control/quality assurance (QC/QA) specifications and quality-based incentives.
- Include performance specifications.
- Require a pavement warranty.
3.4. Public Relations
- Establish a project team with representation from all areas.
- Coordinate with GDOT communications office on all messaging, logos, signs and pr efforts statewide, including consultant projects. The inconsistency in HOV/carpool lane signing in Atlanta is a case in point.
- Begin coordination during the planning process, and include it in every stage forward.
- Hire a media-messaging consultant.
- Research best management practices in State and nationally.
- Identify project stakeholders.
- Identify the cultures and communities that will be affected.
- Find what resonates with the public.
- Ascertain how the public wants to receive information.
Objectives and Strategies
- Share market survey results internally.
- Utilize the market survey results to further community outreach during the environmental phase.
- Work with the project team to develop future strategies, measures and themes with the intent to preserve the fabric of the community as much as possible.
- Do follow-up surveys to determine the effectiveness of the measures used and to adjust tactics as needed.
- Promote at umbrella and community-specific levels.
- Target your message.
- Internal audience.
- Define campaign specifics.
- Share changes and success stories.
- Involve communications staff in designing the preliminary engineering scope of work.
- Make public outreach a standing component in construction budget.
- Ensure that the communications office is the central point of contact/oversight for all communications efforts.
- Use a "countdown to completion" and related incentives/disincentives.
- Secure professional endorsements.
- Consider third-party endorsements.
- Consider linking this project to reconstruction of the SR-54 interchange and any other local projects.
- If directional lane closures are used:
- Elevate the public information campaign and the associated funding.
- Consider hiring a consultant.
- Consider additional elements such as billboards and outreach to other states.
- Place HOV lanes next to the median.
- Consider a half diamond design at Bob White Trail.
- Build just north of the existing bridge.
- Consider temporary closure of the Bob White Trail bridge if the alignment isn't shifted.
- Redo local/frontage roads at the SR-85 interchange and from Bob White Trail to US-19/41.
- Realign the Forest Parkway ramp to improve traffic and the maintenance of traffic during reconstruction.
- Accelerate Forest Parkway and US-41 to minimize impacts.
- Accelerate the project by optimizing the schedule:
- Allow alternatives such as the use of existing piers.
General Bridge Issues
- Remove and replace walls where needed. Use MSE walls.
- Consider different material/construction methods:
- Use earth walls at Bob White Trail bridge.
- Use maturity meters.
- Consider including road user costs in comparing options - but they must be defined.
- Use pre-stressed beams for:
- Forest Parkway - both bridges.
- Bob White Trail.
- Use curved steel girder on the Forest Parkway ramp.
- Make Lynwood Drive a normal steel widening project.
- Improve air quality.
- Reduce congestion.
- Maintain traffic during construction.
- Maximize HOV/HOT.
- Minimize impacts on the public and local businesses.
- Develop the concept of operations.
- Conduct an origin-destination study to identify what type of traffic this facility is going to serve: short-trip or longer-distance commuters (those traveling more than 10-12 miles).
- Make a choice between express/HOV/HOT/commercial truck lanes or a combination thereof.
- Plan for maintenance of traffic during construction.
- Prepare a traffic impact statement.
- Prepare for closures and use of alternate routes.
- Flexible closures: full/staged/time of day/time of week.
- Use of I-675.
- Upgrading of crossroads or parallel routes.
- Use of incentives/disincentives in regards to their impact on the public.
- Use of free buses to promote temporary or long-term mode shift.
- Identification of staff to communicate with public (local and through traffic) and with project/GDOT staff.
- Incorporate/promote Park and Ride facilities.
- Reduce accidents.
- Provide effective incident management.
- Evaluate the use of barrier or buffer (striped) lane separation.
- Implement enforcement/crash investigation sites.
- Coordinate with local jurisdictions and facilities.
- Have pre-defined incident response plans (including during the construction phase).
- Use HERO, an "on-call" wrecker service and local officials.
- Use toll tag requirements and locations.
- Use vertical screens in the work zone to prevent rubbernecking.
- Use the Transportation Management Center (TMC) for continuity of operations.
- Replace the current fiber optics network with wireless communications.
- Provide enforcement utilizing available technologies.
- Provide real-time traveler information to the public.
- Depending on the ultimate concept, install and use ramp meters.
- Utilize smart work zones/portable trailers.
- Use dynamic message signs (DMS), closed circuit television (CCTV) and detectors to support HOV/HOT lane operations.