ACTT Workshop: New Jersey
November 16-18, 2004, Cherry Hill, New Jersey
Chapter 3: Workshop Recommendations
3.1 Environmental Skill Set
Constraints and Opportunities
- Natural Resources:
- Stormwater-must consider stormwater options early:
- Affects ROW needs.
- Affects project cost (design, construction, ROW, and mitigation).
- Affects constructibility.
- Affects geometry (need greater design detail).
- Avoid violations during construction.
- Little Timber Creek ecosystem.
- Pursue diverging Ramp B and C alternative proposed by geometric skill set to provide significant wetland credit and stormwater opportunities:
- Remove two stream crossings on Al-Jo's curve.
- Maximize floodplain and wetland creation and restoration.
- Add bioretention in reclaimed areas.
- Bellmawr Park Community:
- Avoid/minimize impacts by redesigning Ramp F.
- Meet with Bellmawr Park residents and association to identify preferred solution(s) to potential impacts. Some mitigation options identified are:
- Utilize undeveloped land adjacent to Bellmawr Park for relocation.
- Utilize open space within the Bellmawr Park community.
- Construct higher-density units along alignment within Bellmawr Park to replace affected units.
- Relocate community facilities to area adjacent to highway and construct new housing in their place.
- Offer buy-out option to residents (not just affected residents) in order to acquire units for relocation for affected residents who wish to remain in Bellmawr Park.
- Address Section 106 considerations.
- Baseball Fields:
- Reconstruct an urban deck in the depressed section alternative.
- Noise Impacts:
- Limited mitigation options are available on stacked alternative.
- Address increased noise impacts at tunnel portals.
- Utilize quiet paving throughout project.
- Utilize noise absorbing materials on structures.
- Visual Impacts:
- Develop appropriate modeling to assess and communicate visual impact of alternatives.
- Consider context when designing structures.
- Aesthetic treatments.
- Select location of tunnel/underpass portals to avoid impacts to sensitive receptors.
- Consider multiple depressed sections to:
- Minimize visual, noise, and traffic impacts.
- Optimize constructibility and use of space.
- Avoid need for detour routes for hazardous cargo.
3.2 Roadway/Geometric Design Skill Set
- Evaluate alternate Ramp A connection with Missing Moves I-295 SB Ramp (SR-42 NB to I-295 NB).
- One primary decision point for SR-42 NB traffic heading towards I-295.
- Eliminates separate Ramp A exit and one decision point along SR-42 NB.
- Moving ramp entrance reduces number of weaving sections along SR-42.
- Continued benefit of longer distance to execute weave between this interchange and SR-168 Interchange.
- Majority could be built off line. One less movement that has to be maintained within interchange during construction.
- Improved likelihood of providing a two-lane entrance with I-295-2400 ft (720 m). Current design has two-lane SR-42 takeoff that necks down to one lane prior to merge with I-295.
- Simplified bridge. Eliminates challenging elevated connection to I-295 mainline.
- Simplified signing.
- Potentially worsens weaves between SR-55 and Missing Moves ramp.
- Missing Moves ramp may not be able to handle increased volume even if increased to two lanes. Missing Moves ramp already services both Leaf Ave and I-295 SB.
- Additional ROW impacts and/or takings including new impacts to commercial properties along Creek Road.
- Portion of alignment on inactive landfill requiring likely use of same geofoam roadway section being used in Missing Moves project-increased cost.
- Original concept does not accommodate local traffic, industrial park traffic, and state trooper access to I-295 NB (see below).
- Major impacts to Missing Moves project schedule and environmental documents if incorporated into that project.
- Evaluate Ramp A connection through variation of original Alternative D concept.
- Avoids Ramp A on structure over I-76.
- Continued benefit of longer distance to execute weave between this interchange and SR-168 interchange, however less than current scheme.
- Elevated section would still lessen potential impacts to properties to remain along Fir Place.
- Still requires complex structural connection to I-295 mainline bridge.
- Constructibility-footprint over existing ramp network.
- Affects mausoleum. Would require additional shifting of mainline north into floodway/floodplain.
- Evaluate single two-lane takeoff for Ramp F and Ramp D (I-76 SB to I-295 NB and SB, respectively).
- One primary decision point for I-76 SB traffic heading to I-295.
- Eliminate Ramp F exit and one decision point along I-76 SB.
- Could move Ramp C bullnose north to improve weave to Leaf Ave.
- Eliminating Ramp F through Bellmawr Park reduces property impacts and roadway footprint.
- Eliminate need for large retaining walls between Ramp C and Ramp F.
- Eliminate bridge for Ramp F and Ramp C crossing if reuse of Al-Jo's curve is pursued.
- Simplified signing.
- Combined ramp volumes of 2,300 a.m. peak and 3,200 p.m. peak may be too high to be supported on two-lane ramp.
- Requires complex structural connection to I-295 mainline bridge.
- Could worsen weave for traffic from Market Street.
- Reversing curves will be difficult to properly superelevate.
- Not compatible with Ramp C over I-76.
- Evaluate single takeoff for Ramp B and Ramp C (I-295 to I-76 NB and SB, respectively).
- One primary decision point for I-295 SB traffic heading toward I-76.
- Eliminate Ramp B exit and one decision point along I-295 SB.
- Increased weave distance for SR-168 on ramp.
- Improved driver expectancy if Ramp C under I-76 pursued.
- Alignment shift could potentially minimize creek impacts.
- Simplified signing.
- Combined ramp volumes of 4,200 a.m. peak and 4,000 p.m. peak would likely require three-lane exit.
- May not have sufficient length to develop profile for Ramp C under I-76.
- Reversing curves will be difficult to properly superelevate, leading to high crown line break between lanes.
- Gore grading/drainage could be undesirable-drain across mainline.
- Could worsen weave from SR-168.
- Evaluate improvements to the Leaf Avenue Interchange along SR-42 NB.
- Maintains connectivity to I-295 and SR-42 NB for locals and commercial properties along Benigno Boulevard.
- Potentially improves exit to Benigno Boulevard-longer queue.
- Potentially eliminates need for traffic signal at Benigno Boulevard-less conflict.
- Leaf Avenue local on ramp would only need to be one lane connection to I-295.
- Opportunity to cul-de-sac Wellwood Avenue and/or vacate in conjunction with adding left turn lane on Creek Road.
- Eliminates single exit for I-295 SB and Benigno Boulevard in Missing Moves project.
- Improves driver expectancy for Benigno Boulevard movement.
- Most "pros" from first item still applicable.
- Requirement improvements cited in first item-connection to Missing Moves ramps.
- Missing Moves flyover ramp could require widening to two lanes.
- Most "cons" from first item still applicable.
- Revisions to Missing Moves project would likely delay that project.
- One lane Ramp A would still require complex midspan connection.
- Evaluate realignment of Essex Avenue with Harding Avenue.
- Could be integrated with modifications to alternatives that shift alignment into ball fields.
- Provides improved connectivity to SR-42 SB. Eliminates need for left turn from Essex and left turn from Creek Road.
- Eliminates T-intersection configuration of Essex Ave and Creek Road.
- Reduces structure length if variation for Ramp A from Missing Moves is pursued.
- Could potentially worsen Creek Road level of service (LOS).
- Could require a traffic signal at Creek Road.
- Limited, if any, specific benefit to the project purpose and need-scope creep.
- Investigate benefits of maintaining existing alignment along Al-Jo's Curve for Ramp C movement (I-295 to I-76 SB).
- Already being investigated as part of the technical environmental study (TES) effort for Alternates D1 and H2.
- Possibly avoid new structure crossing of I-76. Currently requires widening along I-76 SB and possible deck replacement for NB due to elimination of express/local configuration.
- Avoid long span curved Ramp C bridge over I-76.
- Improved elevation differentials along Bellmawr Park versus Ramp C over or under schemes.
- Potential staging benefits. Limit I-76 maintenance and protection of traffic (MPT) if existing underpass maintained.
- Public perception that major roadway deficiency is not being eliminated.
- Existing substandard underclearance.
- Existing substandard radius and stopping sight distance for 45 mi/h (72 km/h) design speed.
- Providing required radius could affect additional environmental resource and church property.
- Reduction in wetlands available to be restored. Existing creek crossing not eliminated.
- Investigate required number of lanes along I-295 through interchange and/or reduced roadway section with 12-ft (3.6-m) outer shoulders.
- Reduced structure width and cost. Even larger benefit realized with underpass/tunnel and stacked alternatives.
- Reduced footprint through Bellmawr Park.
- Improved ability to develop multilane ramps-2,400 ft (720 m).
- Deviates from established project goal of maintaining three-lane I-295 roadway in each direction.
- Preliminary traffic analysis indicates nominal improvement.
- Proposed 16- and 17-ft (4.8- and 5.1-m) shoulders meet posted 55 mi/h (88 km/h) speed-more approvable design exception. The 12-ft (3.6-m) shoulders meet less than 45 mi/h (72 km/h) design speed.
- Perception of being short sighted with respect to traffic increases.
- Investigate improvements to the Market Street/Rte 130 I-76 SB on-ramp.
- Could improve Market Street/Rte 130 to Ramp D weave by reducing on-ramp turbulence.
- Higher Market Street on ramp volumes could be function of non-existent Missing Move ramps-U-turns.
3.3 Geotechnical Skill Set
- Accelerate Construction.
- Minimize impact on:
- Existing traffic.
- Existing structures.
- Improve safety.
- Depressed Roadway/Urban Decks
- Minimal impact to existing traffic.
- Improved work zone safety (versus bridge construction).
- Reduced noise.
- Context sensitive solution (open space).
- Work underground 24/7.
- Jacked Boxes:
- Jacked sections (under live traffic).
- Under 800 ft (240 m), not classified a tunnel.
- Use in conjunction with cut and cover.
- Minimal impact to traffic.
- Ramp C (under Browning, Ramps B, D, and I-76).
- Under all existing roadways.
- Cut and Cover:
- Slurry wall construction.
- Top down.
- Precast decking.
- Work below covered area.
- Minimal impact to traffic.
- Keep heights as low as possible.
- Use lightweight fills liberally.
- Advanced construction contract.
- Lightweight fill materials:
- EPS geofoam embankments.
- Lightweight foamed concrete.
- Shredded tires.
- Numerous facing/aesthetic treatments.
|Fill Type||Range of Density (kg/m3) [lb/ft3]|
|Geofoam||14 to 30 [1-2]|
|Foamed Concrete||335 to 770 [20-50]|
|Wood Fiber||550 to 960 [35-60]|
|Shredded Tires||600 to 900 [35-55]|
|Expanded Shale or Clay||600 to 1040 [35-65]|
|Flyash||1120 to 1440 [70-90]|
|Boiler Slag||1000 to 1750 [65-110]|
|Air Cooled Slag||1100 to 1500 [70-95]|
- Shredded tires:
- Use of waste material.
- FHWA guidelines.
- Earth retaining structures:
- MSE walls.
- Soil nailing.
- Secant walls.
- Anchored walls.
- Gravity walls.
- Secant pile wall system
- Deep foundations:
- High-capacity piles.
- >200 tons.
- Fewer piles.
- Smaller cap.
- Less noise.
- No spoils.
- Simplify quality control (QC), dynamic testing, inspection.
- Augered (drilled shafts, micropiles).
- Where vibrations are a major issue (<100 ft [30 m]).
- Advanced construction contract.
- Design phase load test program.
- Material availability.
- Contracting mechanism.
- Contaminated soil.
3.4 Structures Skill Set
Get In, Get out
- Prefabrication of any bridge, bridge elements, and structural systems.
- Advance purchase/fabrication of structural components.
- Deck systems.
- Roll-in railroad structure.
- Walls-select based on construction speed and design needs:
- MSE walls.
- Sheeting with or without facade.
- Post and panels.
- Modular walls.
- High-performance concrete (HPC) and high-performance steel (HPS).
- Lighter loads.
- Shallower system.
- Bridge movement system.
- Self-propelled modular transport.
- Girder launching/skidding.
- Roll in.
- Vertical lifting.
- Stay Out:
- HPC and HPS.
- Low-maintenance structures (no tunnel).
- Quality and durability-integral abutment bridges.
- Inspectibility without affecting traffic.
- Future redecking.
- Automated deicing on deck of big bridge and flyovers.
- Design with these items-lock in transportability.
- Set construction duration.
- Project-wide Web-based electronic communication plan.
- Electronic shop drawings.
- Electronic design submittals.
- Suggestions to Alternative D:
- Investigate depressed Ramp C and make Ramp D flyover.
- Investigate eliminating Ramp F by combining with Ramp D and bring it to the big bridge.
- Investigate taking all I-295 traffic off SR-42 NB at Missing Move ramp.
3.5 Traffic/ITS/Safety Skill Set
- Identify closure hours/options:
- Monday through Thursday (11 p.m.-5 a.m.), except weekends/holidays; summer period-May 15 to September 1.
- Tailor hours to actual volumes and capacities on mainline and ramps.
- Evaluate noise ordinance restrictions; seek waivers.
- Consider special/sports event impact.
- Shoulder/median can be used as through lane.
- Multiple shifts and night work should be considered.
- Ensure current and reliable counts.
- Moveable barrier (reversible lane).
- Identify alternate routes:
- Identify routes such as NJTPK, SR-130, SR-41, SR-47, SR-168, and local roads.
- Identify and involve stakeholders, including Pennsylvania DOT and Delaware DOT.
- Identify opportunities for improved efficiencies on alternate routes (variable-use lanes; restrict movements on SR-168 and SR-130, signal timing, signing and striping modifications, and intersection improvements).
- Staging components:
- Consider staging sequence to minimize road user impact.
- Sequencing key phases.
- Public transportation alternatives and incentives:
- Port Authority Transit Company (PATCO).
- New Jersey Transit.
- Free/discounted passes, HOV discounts.
- Park ‘n Ride (temporary leases or permanent) discounts.
- Cross County Connection, TMA.
- Include in budget to accommodate additional alternatives.
- Smart Work Zone Concept:
- Provide travel times for existing and alternate routes.
- Provide detector and camera information.
- Evaluate possible lane closure options.
- Use permanent or temporary locations.
- Construction coordination:
- Establish coordination committee.
- Ensure coordination with other agencies/contractors active in area.
- Traffic Interference Report (TIR).
- Maintain active construction worksite.
- Emergency response team:
- Communication with police, fire, and other agencies.
- Include traffic operations and contractor representative.
- Include incident management task force (Routes 295/42/76).
- Advanced notice to public/politicians:
- Ensure accurate/complete information.
- Feed info to news media.
- Variable message signs (new message alert-highway advisory radio).
- Reliable delay reporting.
- "511" phone information source.
- Prepare marketing.
- Integrated ITS implementation:
- Traffic video will be available via TS #16 (real-time and Internet recorded images in use).
- Permanent VMS are present adjacent to project area.
- ITS capabilities will be available during construction.
- Work zone construction details including ramp merge.
3.6 Construction Skill Set
- Saves time, reduces claims.
- Requires critical path method (CPM).
- Allows more innovation.
- Under contractor control.
- Single contract.
- Public relations.
- Permits innovative funding.
- Limits bidder pool.
- Construction Management:
- Use of CPM activities:
- Regardless of contracting method implemented, use cost loaded CPM.
- Escrow of bid documents.
- Hire contractor and/or designer to review construction schedule prior to contract award.
- Incentives and disincentives used at critical stages and milestones.
- Prior to design phase.
- Allows for advanced utility work.
- Influences design-build options.
- Benefits funding issues.
- Utility corridor.
- A+B bidding and lane rental:
- NJDOT has experience with A + B bidding.
- Lane rental is a proven technology that should be pursued in New Jersey.
- Nationwide experience.
- Construct a temporary ramp for SR-42 SB to the Missing Moves project to I-295 SB:
- Allows construction of Ramp F, part of Ramp C, and false work on I-295 bridge (mainline) without traffic.
- Capacity of Missing Moves project must be evaluated.
- Construct a temporary ramp from I-295 NB to the Missing Moves project to SR-42 NB:
- Improves construction staging and operations for new I-295 mainline.
- Additional initial costs will be offset by a much shorter construction duration and lower overall contract costs.
- Detour traffic using the NJTPK:
- Segregates I-295 through-traffic.
- Allows for accelerated construction.
- Should eliminate NJTPK tolls during construction.
- Traveler mitigation.
- Modify Browning Road grade-raise:
- Reduces heights of I-295 mainline and ramp structures.
- Reduces cost of mainline work ($50 to $100 million).
- Reduces impacts to Victory Drive (homes).
- Enhances mainline and ramp geometrics.
- Reduces noise and visual impacts.
- Reduces construction duration by approximately 1 year.
- 30 percent reduction.
- Requires reassessment of Bellmawr homes.
- Build prefabricated structures and other elements:
- Minimizes disruption to traffic.
- Provides cost savings.
- Allow closure of I-295 for short durations:
- Need advanced public relations (PR).
- PR needs to be continuous.
- Consider use of reversible barrier:
- Easy and quick to implement.
- Increases traffic capacity.
- Contractor staging area and casting yard:
- Eases construction and speeds delivery.
- Saves contractor money-owner.
- Pavement-type HMA versus PCC:
- Recommend HMA to facilitate construction stages
- Use innovative materials/technology as needed to facilitate construction:
- Numerous materials are available that could be used on this type of project.
- Cost effective.
- High quality and durable.
3.7 Innovative Contracting/Financing Skill Set
- Delivery Methods:
- Phased construction.
- Advance construction (DBB):
- Utility relocations.
- Prepurchase material.
- ITS for alternate routes.
- Primary contract method (modified DB):
- Special prequalifications (short list).
- Risk allocation.
- Clearly define roles/responsibilities.
- Prescriptive performance requirements.
- Program management oversight.
- Cost plus time bidding:
- Commonly referred to as A+B bidding.
- Award to the lowest A+Bx, where:
- A = traditional bid component.
- B = contractors bid for the number of days to complete critical work.
- x = an amount based on road user cost per day.
- Include I/D provisions in the contract.
- Multiparameter bidding:
- A+B = cost plus time.
- C = maintenance or warranty parameter.
- Special prequalification:
- Pass/fail criteria.
- Specialized expertise.
- Contract management:
- Time I/D.
- Quality I/D.
- Traffic management I/D.
- Lane rental:
- A contracting technique that assesses a rental fee for each lane taken out of service during construction.
- The use of this technique minimizes the time that roadway restrictions affect traffic flow.
- Elevate issues in a timely fashion.
- Eliminate litigation and claims.
- Complete projects on schedule.
- Complete projects within budget.
- Maintain high quality.
- Maintain safety.
- Find better ways to get the job done.
- Quality-based methods:
- Warranty/maintenance provisions.
- Mandatory prebid.
- Preconstruction workshops:
- Utility coordination and process review.
- QA adjustments.
- Financing considerations:
- Revenue sources.
- Financing mechanisms.
- Project finance plan and cost estimates.
- Revenue sources:
- Federal Aid Highway Program.
- New Jersey Transportation Trust Fund Authority.
- User charges: direct or shadow tolling, HOT lanes.
- Local involvement: developer assessments, sales taxes, and property taxes.
- Private sources: construction companies, other contractors.
- State general funds (GO bond proceeds).
- Financing mechanisms:
- GARVEE bonds.
- Trust fund tax-free debt.
- 63/20 corporation.
- DBOM/DBM contracting (prepaid maintenance/warranty).
- ROW lease-purchase (annuity).
- Construction cashflow financing.
- Commercial paper issued by State or trust fund.
- Financing plan:
- Basic financing plan and time schedule for each alternative as decision criteria:
- Consistent with project schedule.
- Cost estimate:
- Common cost categories including environmental, traffic management, and utilities.
- Inclusive of project scope, financing costs.
- Expressed in year of construction dollars.
- Includes contingencies.
- Incorporates certainty/probability (Washington State DOT cost estimation model).
3.8 Public Relations Skill Set
- Inform communities of construction plans, potential impacts, and address their concerns during construction phase.
- Advise commuters of short- and long-term traffic impacts, i.e., lane closures, traffic pattern changes.
- Divert 10-20 percent of traffic from the interchange during construction.
- Conduct research to:
- Determine best method of reaching key audiences-find out what they want to know, methods of getting it to them, and how it will change their commutes.
- Determine motivations that will divert motorists, i.e., time savings or costs.
- Use and expand community advisory committee.
- Identify stakeholder groups and communications needs.
- Communications plan strategy #1:
- Conduct an aggressive community outreach program:
- Establish visible, friendly presence in the community via a mobile information center.
- Communications professional serves as community liaison to address concerns, i.e., noise, traffic.
- Develop newsletter for community residents, elected officials, and community leaders with project details and milestones.
- Frequent updates to elected officials to include project tours.
- Communications plan strategy #2:
- Advise commuters of short- and long-term traffic impacts.
- Partnership with local traffic reporters.
- Work with tourism industry.
- Commercial media advertising, radio, and print.
- Project website; link to live traffic cameras.
- HAR radio.
- Project brochures (distribute at toll booths, EZ pass mailings).
- E-mail subscriptions for project updates, lane closures, etc.
- Shopping mall kiosk.
- Communications plan strategy #3:
- Divert 10-20 percent of automobiles from interchange during construction.
- Establish a mobility strategy group to provide and promote alternative transportation choices:
- Transportation Management Association (TMA).
- Delaware River Port Authority (DRPA).
- New Jersey Transit.
- Atlantic City Expressway Authority.
- Delaware Valley Regional Planning Commission (DVRPC).
- Limousine/tour bus industry.
- Divert 10-20 percent of automobiles from interchange during construction.
- Aggressive media relations program:
- Broadcast and newspaper.
- Traffic reporters.
- Special interest publications, i.e., AAA.
- Communications needs:
- Budget 4-6 percent of project cost.
- Add to the project team a full-time communications professional.
- Procure marketing firm to assist with research and advertising activities.
- Potential funding mechanisms to supplement project funding:
- Congestion mitigation air quality (CMAQ) promotion of ride sharing.
- Highway safety 402 funds-promotion of workzone safety, aggressive driving, etc.