U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000


Skip to content U.S. Department of Transportation/Federal Highway AdministrationU.S. Department of Transportation/Federal Highway Administration

Construction

<< Previous Contents Next >>

At-Grade Intersection Improvement MD Route 97 Georgia Avenue at Randolph Road

Appendix C: Skill Sets Recommendation(s) - Team Recording Forms

  • Construction
  • Geotechnical Engineering Utilities
  • Public Relations/Public Involvement
  • Roadway/Geometric Design
  • Structures
  • Traffic Engineering//ITS/Safety
Construction Recommendation(s) – Team Recording Forms
Accelerated Construction Technology Transfer Workshop
IDEA
(Short Name)
IDEA
(Detailed Description)
Implementation Details
(Barriers, Skill Set Coordination, etc.)
1. Social and Environmental Issues
  • Using 4f properties for temporary construction activities
  • Shopping Center Parking lot, recreation field, Lot north of Kiss and Ride, Glenmont Greenway
  • Utility Staging Areas, Permanent Easements, and Construction contract.
  • 4f needs to be revaluated.
  • Secured prior to advanced Utility Contract.
  • Pedestrian mobility
  • Pedestrian MOT per phase
  • Public relations campaign
2. Public Relations
  • Community Liaison, community meetings, project web-sites
  • Use of Consultant = more money
  • Existing contracts
  • Monthly meetings
3. Phasing
  • Think outside-the-box for Retaining Wall Design/Bridge Design and Maintenance of Traffic with the intent for reducing project and phase duration
  • Reduction in and lane closures may create a more efficient/productive wall design
  • Use of innovative wall designs (i.e. top-down walls, secant walls, soil nailing, etc.)
  • WMATA Concerns
  • Proposed Phasing- Widen to outside, Build Structure (bridge and walls concurrently), final paving
  • Eliminate Temporary shift
  • 3 year construction period for roadway project
  • Night work/short duration total closures to be investigated
  • ICC and other project Coordination
  • Both peds and vehicles
  • Truss at or slightly above existing Grade, over Randolph Road
  • Georgia Ave. Truss, workers underneath, safe, one shift in traffic.
4. Advanced Construction Contract
  • Utilities
  • All affected Utilities relocated with one contract (aerial and Underground)
  • Duct work and Cabling
  • Specifications included for Pre-qualified Utility contractor for both Pepco/Verizon in advanced contract
  • Storm Drain
  • Complete Storm drain with Advanced Utility Construction and reconstruction of Judson and Sheraton Streets
  • Installation of proposed storm drain allows for Randolph Rd. Excavation
  • Advertise Utility contract, hold Roadway construction contract
  • Set NTP for Roadway to coincide with anticipated completion of Advanced contract
  • Part of Utility design
  • Identify Utilities, eliminate conflicts
  • Subsurface Utility Engineering
  • Consider Use of SUE as line item in both contracts (advanced utility contract and roadway contract)
5. Reduce Congestion within Workzone
  • Explore Detour options
  • Identify corridors for east/west and north/south routes during construction
  • Market to public, community ,local officials, etc.
  • Bus Route (public transit/school bus) alternatives
  • Schools use alternative routes
  • Provide areas for pull-offs
  • Consider consolidation of bus stops, Mo. Co. and WMATA
6. R/W
  • Advanced R/W Acquisitions
  • Demolitions included with Advanced Utility Contract
  • Monitoring Wells for the Purpose of Identifying Possible Contaminated Soils
  • Monitoring well installation ASAP to determine extent of potential contamination – OMT installs?
7. Innovative Contracting
  • Incentive/Disincentive at Critical path Milestones
  • Cap? Is it worthwhile?
  • Take advantage of contractor’s expertise
  • Risk shifts to contractor
  • Maximize Flexibility
  • Specify Constraints – WMATA, Etc.
  • Design/Build
  • Advertise all work, D-B team develops concurrent phasing
  • Performance Specs
  • A+B
  • Potential for Time reductions
8. Construction Management
  • Use of Construction Management and Inspection Contracts
  • Specialized expertise
  • Utility Coordinator
  • Method of tapping Private Sector
  • Downfall: Another contract
  • Use of Conventional SHA Admin. and Inspection
  • Downfall: SHA may not have manpower
9. Agency Coordination and Public Involvement
  • Start Discussions with organizations early
  • Washington Metropolitan Area Transit Authority
  • If required, quick turn around on plan reviews, shop drawings, schedules, change orders
  • Eliminate surprises from and to
  • Restrictions on Design and Construction must be coordinated into Plans
  • Spell out Restrictions in Contract

Geotechnical Engineering Utilities Recommendation(s) – Team Recording Forms
Accelerated Construction Technology Transfer Workshop
IDEA
(Short Name)
IDEA
(Detailed Description)
Implementation Details
(Barriers, Skill Set Coordination, etc.)
1a. Retaining Wall - Top Down Construction

Drill Shaft Secant/Tangent Wall
  • Construction of top-down wall alternatives can possibly be completed with live traffic on adjacent Randolph Road. This minimizes or eliminates the need for a detour of Randolph Road traffic and combines MOT phases during construction
  • Can be installed in advance of construction reducing MOT needs
  • Shafts constructed below water table will require wet or cased construction techniques
  • Drilled shaft construction will require staging area
  • Various wall aesthetic treatments available. Precast facing elements shall be considered for accelerated construction
1b. Retaining Wall – Top Down Construction

Soil nail walls
  • Construction of top-down wall alternatives can possibly be completed with live traffic on adjacent Randolph Road. This minimizes or eliminates the need for a detour of Randolph Road traffic and combines MOT phases during construction
  • Can be constructed in combination with shallow spread footings
  • Can be constructed as a temporary or permanent solution
  • Difficult to construct below ground water table
  • Various wall aesthetic treatments available. Precast facing elements shall be considered for accelerated construction
2a. Bridge Foundation Construction

Shallow Spread Footings
  • Support bridge abutments on shallow spread footings. Earth retention system (ERS) for construction of Randolph Road is a required separate system. (this is not as currently shown in plans as a spread footing for a full height abutment)
  • Will require additional earth support system for excavation to Randolph Road
  • Negligible impact on WMATA tunnels
  • May require increased span length for bridge due to separate ERS
  • Construction will require MOT phasing
  • Easier and more economical to construct than deep foundation alternative
2b. Bridge Foundation Construction

Grade Beam on Drilled Shafts (Span WMATA Tunnels)
  • Support bridge on drilled shaft foundation with a shallow grade beam spanning the WMATA tunnels
  • Least impact of WMATA tunnel zone of influence for deep foundation alternative
  • Requires large capacity drill shafts
  • Requires large “cast-in place” grade beam construction
  • Construction will require MOT phasing
2c. Bridge Foundation Construction

Continuous Drilled Shaft Secant/ Tangent Wall (over WMATA Tunnels)
  • Continuous wall construction for soil retention at bridge location
  • Wall may also act as foundation for bridge
  • May require sophisticated analysis to determine load transfer over WMATA tunnels
  • ERS may require additional tiebacks
3. Construction Sequence
  • Total and/or sequenced closure(s) of the MD 97/Randolph Rd intersection to construct at-grade bridge.
  • Advanced construction contracts:
    • Foundation/substructure
    • SWM (Bio-retention facility)
    • Utility relocation
  • Reduces MOT phases and possibly eliminates need for full detours
  • Reduces right of way needs
  • Requires significant/advanced public notifications
  • Completing work during advanced construction contracts accelerates project schedule
4. Detailed Subsurface Characterization
  • Supplemental testing and characterization of sub-surface materials for cost-effective and safe design of geotechnical features
  • Enhance/optimize determination of soil and rock strength parameters for bridge foundation and earth retaining structure design alternatives.
  • Characterization of sub-surface materials for contamination prior to advertisement, if not already done
5. Construction Issues
  • Use of high-performance and innovative materials and methods for construction of foundation elements and walls
  • Pre-qualify specialty contractors and material suppliers
  • Consideration of SCC for drilled shaft construction
Example:
Mechanically Stabilized Earth (MSE)
  • Mitigation to include one or more of the following: deep ground improvement and/or light weight fill (geofoam/light weight slag)
  • Advantages: Quick wall construction. Relatively conventional wall. Use of slag as light weight fill should be available.
  • Disadvantages: Larger excavation and ROW. Disposal of material, potential for contaminated soils. Relocate utilities. May not be feasible in regards to utilities. If deep soil mixing, specialty contractor required.

Public Affairs/Public Involvement Recommendation(s) – Team Recording Forms
Accelerated Construction Technology Transfer Workshop
IDEA
(Short Name)
IDEA
(Detailed Description)
Implementation Details
(Barriers, Skill Set Coordination, etc.)
1. On-site community liaison
  • Hire a PR consultant at the outset of the project. Funding must be set aside out of the construction budget for this. Located at project field office.
  • Funding, Qualified Candidate, Locally based
2. Informational Public Meeting
  • A week or two before the informational public meeting meet with local officials, county council members, and then open houses to educate public.
  • Coordination of date, timing of the year, coordination of all disciplines (i.e. real estate, highway design), consider literacy and LEP, Who is appropriate to deal with these meetings, convincing public officials to support the project publicly
3. Database (blast e-mail) for outreach
  • Setup a database of all stakeholders, interested parties, and individuals that need to be informed about the project
  • Getting the information, compiling and maintaining the list, trust issues
4. Project website
  • Communicate project news and changes on CHART website. Purchase domain names.
  • Developing and keeping up to date, IT support, ADA (508) compliant
5. Community Outreach
  • Fliers, door hangers, newsletters (print and electronic), brochures, giveaways, speakers bureau, information on city and county webpages, drop-in center, kiosk, develop public service advertising for display in bus shelters (clear channel media)  and also on buses, public advertisement on grocery bags, HAR/VMS, static project information signs
  • Support of companies, funding, must weigh benefits vs. risk of information overload
6. Media outreachPress releases, Traffic Reports, Blogs, Radio/TV/Print Interviews, Public Service Announcements, Letters to the editor, editorials, local cable access programs
  • Lisa and Bob on WTOP. Hold meeting with traffic reporters to educate them on the project and enable them to air frequent updates.
  • Outreach to Hispanic organizations, Spanish speaking radio stations (99.1 El Zol)
Buy-in of the media, costs, consistent up to date information, ability to reach non-English speakers, Identifying programs to participate on, availability of staff, identifying talent

Public Affairs/Public Involvement Recommendation(s) – Team Recording Forms
Accelerated Construction Technology Transfer Workshop

  • Identify all stakeholders in the project: Home owner associations, Kensington Volunteer Fire Department (privately owned, volunteers and paid workers), Glenmont Shopping Center (strips of business that extend out to Georgia Ave.), Washington Metro. Area Transportation Authority (WMATA): land, buses, MD National Capital Park and Planning Commission, Former School Site (owned by MO County), DPWT, Apartment Complex (residents as motorists and pedestrians), park users, shoppers, users of the transit system, single family neighborhood, neighborhood activists (Michael McAteer, "don't built and they won't come"), elected officials: State, county (no growth, pro-environment in office), Simultaneously constructing ICC and MD97, Glenmont Citizens Association, Emergency Response (police and Fire), Board of Education, Kennedy High School, School Bus Depot, Business Owners (bank, McDonald's, gas stations, Shoppers grocery store), Business Tenants, County Traffic Management Center, CHART, different ethnic backgrounds (tailoring the message to different ethnic groups), The Gazette, Spanish written newspaper
  • Bring stakeholders into the project and the process of regional communications
  • Investigate methods of effective communication to motorists and pedestrians traveling through the area during construction: webpage, communicate lane closures on CHART website, e-mail updates/notifications (e-newsletters), geo-serve (key words are spotted and links sent out), public relations or private company to as a communication's manager, office w/ printed information in Wheaton, involvement with the school, bilingual communications, getting the word out when closing down lanes, coordinating construction w/ ICC, PSAs in multiple languages (no budget to do it), bare bones right now – solution: ask for a dollar amount, percentage of project placed aside for PR: on-site liaison, renting space for on-site citizen information center, once a week have an on-site kiosk, portable variable messages signs, purchase of advertising: bus shelters, free public advertisement on grocery bags, door hangers online/webpage, radio/news radio, WTOP traffic reporters (Bob Marbourg & Lisa Baden), & news
  • Investigate the need for a Public Relations Manager on site: need a project community liaison for construction paid for by the State out of the project (a State employee on contract acts as a community activist, has knowledge of engineering, construction, and how to work with people), needs to be local, reach out to the community
  • How do we secure the acceptance and participation of all stakeholders? Full time person with dedicated funding, press releases, brochures, fliers and e-newsletters, elected officials support (send letters and meet with them), because of the amount of projects in the district it is imperative to reach out to officials with more personal briefings about the project, informational public meeting (3 to 5 months before the project starts with real estate, design, hydraulics, and environmental representatives), information on city and county web pages, speakers bureau at 'kiwanis' clubs, meet with or develop 15-20 minute video for civic association or college, mindset change that needs to change ($ for PR), look for federal grants through the Maryland Division (Nelson), technology money, PR firms looking for non-profit companies to campaign, deliver what we promise and have a finite end to the construction specifying particular weekends prior, consider the intangible losses that the locals will encounter
  • How do we collaborate with and manage the information released by the Press? Cannot manage it or handle it, write a letter to the editor that it is pro-transportation
  • What is the most effective means of informing the local elected officials and their constituents of construction progress and impacts? The CTP process, our administrator contacts them, very global and general, a week or two before the informational public meeting meet with local officials, for the meeting consider literacy, look for a non controversial Hispanic organization (99.1 El Zol), population of Salvadorians, Mexico, and Central Americans, county council members, database (blast e-mail) for outreach, clear channel media (bus shelter advertising)
  • Develop a plan to engage all stakeholders in the acceleration of construction process and communicate to them the overall benefit. Solicit their assistance. Local cable access program, Consultant community liaison to develop and implement a plan with 1) open house, 2) handouts and public school material, 3) project website, 4) e-mail/e-blast, 5) Spanish language radio, 6) Lisa and Bob on WTOP*, 7) face to face meetings, 8) direct mail, 9) field office, 10) bus shelter advertising, 11) press releases, 12) ask the project manager
Roadway/Geometric Design Recommendations(s) – Team Recording Forms
Accelerated Construction Technology Transfer Workshop
IDEA
(Short Name)
IDEA
(Detailed Description)
Implementation Details
(Barriers, Skill Set Coordination, etc.)
1. Relocate Utilities along Georgia and Randolph instead of Sheraton and Judson Bring the relocated utilities along the west side of MD 97, north side of Randolph, across Randolph west of Judson, and the southern edge of Randolph to tie back to the original scheme. Avoid reconstruction of Sheraton and Judson Roads except as needed for storm and sanitary construction.Possible 4F issue to be considered. Buy the house currently for sale on the northwest corner of the intersection for several uses during project construction. This property could be converted to green space after construction is completed, if needed o mitigate the 4F impacts. Coordinated with Traffic and Construction Skill Sets.
2. Build the retaining walls from the top down to avoid the detours and relocation of the Fire Station. Keep the current horizontal alignment along both roadways, even during construction. Build the retaining walls built top down. Build the bridge first, then excavate under.
If this alternative proves unfeasible, construct a new intersection south of the current intersection. Shift Randolph Rd farther south. Build a temporary bridge, then excavate under. Cuts down on lane shifts but may need to relocate Police Station, on or off site (the building could be moved).
Coordinated with the Construction and Geotechnical Skill Set.
3. Consider keeping the existing vertical alignment of MD 97.Hold the existing grade will potentially simplify M.O.T. but may require Randolph Road to be lowered.Coordinated with the Structures Skill Set.
4. Eliminate the jug handle. Eliminate the left turn from the express lanes. Provide left turn from eastbound Ramp B.Eliminate the left turn lane from the tunnel and shift the left turn lane onto the local lanes. Sign the tunnel traffic as through only and local traffic to keep right. The two retaining walls will be positioned parallel to each other. To accomplish the shift, the vertical curve will need to be modified from slightly to shorten the walls on the east end. The need to buy the police station's parking lot and its replacement is also eliminated.Coordinated with Structures, Traffic and Construction Skill Sets. Traffic is considering the elimination of the signal at this intersection altogether. If this requires a U-turn to gain access eastbound to the shopping center, we do not support it.

Structures Recommendations(s) – Team Recording Forms
Accelerated Construction Technology Transfer Workshop
IDEA
(Short Name)
IDEA
(Detailed Description)
Implementation Details
(Barriers, Skill Set Coordination, etc.)
1. Bridge Randolph Road over MD 97

Build bridge/MSE wall approximately 1900' long starting just west of Judson Road to just east of Glenmont Circle carrying the through movements of Randolph Road over existing MD 97. Segmental concrete box girder super structure with large cantilivers, approximately 70' wide, probably constructed span by span with underslung truss or overhead gantry. (other super structure options possible). Approximate cost of $20M. Approximate span length 130'. Foundations constructed using monoshaft with single column piers.

ALTERNATE OPTION:
Extend MSE Wall to minimize the bridge structure length.

Advantages

  • Minimize utility impacts (no underground relocations)
  • Reduce ROW impacts (eliminate some total takes)
  • Lanes can be tucked under structure
  • Aesthetics
  • Significant time savings for construction
  • Reduce construction stages
  • Minimize hazardous material impacts
  • Minimize impacts to surrounding structures
  • Saves money (ROW/Utility impacts)

Disadvantages

  • Visual intrusion
  • Long term maintenance costs
  • Planning process will require revisiting
2. Bridge MD 97 over Randolph Road

Build bridge/MSE wall approximately 1900' long carrying the through movements of MD 97 over existing Randolph Road. Segmental concrete box girder super structure with large cantilevers, approximately 70' wide, probably constructed span by span with underslung truss or overhead gantry. (other super structure options possible). Approximate cost of $20M. Approximate span length 130'. Foundations constructed using monoshaft with single column piers.

ALTERNATE OPTION:
Extend MSE Wall to minimize the bridge structure length.

Advantages

  • Carrying heavier traffic movements, improving LOS
  • Less impacts on residents
  • Minimize utility impacts (no underground relocations)
  • Reduce ROW impacts (eliminate some total takes)
  • Lanes can be tucked under structure
  • Aesthetics
  • Significant time savings for construction
  • Reduce construction stages
  • Minimize hazardous material impacts
  • Minimize impacts to surrounding structures
  • Saves money (ROW/Utility impacts)

Disadvantages

  • Possible conflicts with WMATA Metro Tunnel (foundations)
  • Visual intrusion
  • Long term maintenance costs
  • Planning process will require revisiting
3. Weekend Closure (as design scheme)

Use drill shafts/steel piles to build bridge over the course of one weekend. Close intersection for a weekend, reopen traffic, then excavate from underneath.

Construction sequence:

  1. Install foundation elements during short term lane closures. Cover with steel plates.
  2. Close intersection for weekend.
  3. Excavate as required depth over the bridge area.
  4. Install precast abutment caps.
  5. Place precast superstructure elements.
  6. Place temporary waterproofing membrane and HMA wearing surface.
  7. Open to traffic.

Advantages

  • Minimize MOT phases
  • Shorter construction time frame
  • Less temporary pavement
  • Potentially less ROW/Easements

Disadvantages

  • Closes intersection for a weekend
    • Detours/Traffic Plan

Issues

  • Coordinate foundation with WMATA tunnel
    • Span length a function of foundation type, spread footing or deep foundation spanning WMATA with a transfer beam
  • Superstructure types
    • Adjacent box beam
    • Solid precast slabs
  • Extensive Public Awareness campaign required
  • Dependent on amount of work, could be expanded to two weekends
  • Staging area will be needed close by
4. Wall Alternatives

Investigate use of secant wall, soldier piling/lagging (top down), soil nail

SECANT/TANGENT WALL (TOP DOWN)
Advantages

  • Can be constructed using lane closures
  • May not require tie-backs
  • Can be used for a vertical load carrying element at bridge

Disadvantages

  • Requires special details at WMATA crossing
  • High costs - $110 to $150 per SF
  • Potential challenges removing decomposed rock material

SOLDIER PILING/LAGGING (TOP DOWN DRIVEN H-PILES)
Advantages

  • Lower costs
  • Less caisson drilling

Disadvantages

  • More extensive MOT
  • Requires special details at WMATA crossing (tie-backs)

SOIL NAIL
Advantages

  • Lowest cost

Disadvantages

  • Longest construction time
  • Possible conflicts with drainage and tie-backs
  • Long term durability concerns (soil PH requires investigation)
5. 69KV Utility Line on Bridge

Place 69KV utility line on bridge rather than relocating it around intersection

Advantages

  • Reduce utility relocation costs

Disadvantages

  • May need to be underground for gas cooling purposes
  • Other utilities may need relocated
  • May not be permitted by Utility Co.
6. Alternate Contracting Options

Consider alternative contracting options such as A+B, Design Build, Detail Build, or Design Build Finance.

Advantages

  • Spur innovation for reducing construction time and possible costs
  • Introduces opportunity for financing and other options

Disadvantages

  • Less control by Agencies
  • More QA/QC required
7. Tunnel under MD 97 (jack and bore)

Consider keeping MD 97 exactly where it is and tunnel Randolph Road under MD 97.

This option considered and discarded due to high costs and specialized equipment which is not warranted by the size of the project.

8. Box Culvert Sections rather than bridge

Close intersection for week (detour traffic) and insert box culvert section to construct bridge

This option considered and discarded due to high costs and issues with transportation of large segments.

9. Shift bridge east

Construct bridge further east, construct temporary roads through greenway on the west side

Advantages

  • Less phases for construction
  • Less impact to traffic

Disadvantages

  • 4f impacts associated with temporary roadway in Greenway
10. Staging Areas

Potential staging area locations:

  • Shopping Center Parking Lot in NE quadrant of intersection
  • Glenmont Greenway
  • Victory Youth Center Recreation Field

Issues

  • Close proximity particularly important for weekend closure options
11. Materials

Potential use of high performance materials.

  • Self Consolidating Concrete (drilled shafts)
  • Automated Computer Control of Concrete Placement Operations
  • High Performance Overlays
  • High Performance Rebar
  • Utilizing Precast Elements

Traffic Engineering/ITS/Safety Recommendations(s) – Team Recording Forms
Accelerated Construction Technology Transfer Workshop
IDEA
(Short Name)
IDEA
(Detailed Description)
Implementation Details
(Barriers, Skill Set Coordination, etc.)
1. Challenges of the Current Design
  • Signing.
  • Shifts Congestion to adjacent intersections.
  • Utility relocations along Judson Road and Sheraton Street
  • Length of Construction period
  • Redirection of local roadway traffic
  • Median nose impeding turning movements
  • Access Management Issues
  • Growth of shopping center
  • Redirect of ICC traffic
  • Concern with decision point where drivers have to get into Express or Local lanes. Signing should be adequately provided to clearly mark the lanes.
  • Concern for the actual benefit of the current design with proposed signal at the shopping center, are we just shifting the problem?
  • There is existing on-street parking along Judson Road and Sheraton Street. Has this been considered in determining construction impacts and providing parking during construction along these roads?
  • The length of construction seems to be very long. Should consider other methods and/or phasing to reduce construction time required.
  • Certain existing turning movements from the local roadways have been removed. Has this been presented to the local communities?
  • Review the median noses and curb radii to verify all turning movements for the design vehicle can be made within the project limits.
  • Concern with the intersection at the shopping center and it's affect on the flow of traffic. Consider eliminating and/or reconfiguring turning movements at this intersection.
  • Has the growth of the shopping center been considered in the modeling of the traffic? This needs to be considered.
  • Has the redirection of ICC traffic been considered in the traffic modeling? Both during construction, after ICC Contract A is completed and ICC traffic is dumped onto MD97, and ultimate build out. These scenarios should be analyzed.
2. Reduction of Construction Time and Cost
  • Consider two/three lane tunnel with reversible lanes for peak direction.
  • Reconsider alternative E – at grade widening – Consider pedestrian bridge/tunnel with elevators.
  • Consider short term closures for certain activities to reduce construction time and phasing – need to perform modeling to determine impact
  • By constructing a smaller roadway section under the existing intersection, the footprint could be made smaller and the construction time and cost could potentially be reduced. This could also potentially allow for construction of the utilities along the mainline roadways instead of along the local roadways.
  • Reconsider other options, including at-grade widening. The concern with this option was pedestrian safety; consider using pedestrian bridge/tunnel.
  • Consider closing the intersection for short term closures to complete certain construction tasks, such as over a weekend, to expedite construction. Should perform traffic modeling to determine the impacts and adjust traffic control throughout the area accordingly.
3. Minimize impact to traffic during construction
  • Signal timing at adjacent intersections within the area network
  • Additional traffic monitoring equipment beyond the project limits (need to determine what Mont. Co. currently has in place)
  • Reduce or eliminate conflicting turning movements in the work zone.
  • SHA should coordinate with Montgomery County regarding signal timing and monitoring equipment within the area network to minimize the impact to traffic during construction. Any additional equipment required should be included as part of this contract.
  • Consider eliminating or reducing conflicting turning movements in the work zone. This could improve operation within the intersection during construction. This would need to be modeled to determine the impacts. Also, if requiring those turning movements to make u-turns at adjacent intersections verify that it can done (consider turning requirements of truck traffic).
4. Provide safe pedestrian / bicycle access during construction
  • Provide positive protection
  • Pedestrian / Bicycle detours
  • Signing
  • Local Information outreach
  • Reduce construction phasing
  • Coordination with WMATA and consider moving bus stops
  • Provide acceptable riding surface for cyclists
  • Maintain adequate lighting
  • It was noted that there is significant pedestrian traffic through this intersection and within the area. This should be considered in the development of MOT plans and the phasing of construction. Need to look at various options to keep the pedestrian / bicycle traffic informed and safe during all phases of construction.
  • Detailed pedestrian / bicycle maintenance of traffic plans should be included in the bid documents
5. Keeping stakeholders informed of traffic and construction conditions
  • Maintain open line of communication with media
  • Coordinate closures with property owners and businesses
  • Community liaison
  • Coordination with ICC construction and other nearby construction projects
  • Maintain accurate traffic control devices
  • SHA must maintain an open line of communication throughout the construction of the project with all stakeholders.
  • A Community Liaison dedicated to this project only is strongly recommended.
  • Coordination with other area projects (including the ICC) is a must as they will also have an affect on the area traffic network. These should be considered when reviewing construction phasing, signal timing adjustments, and additional traffic monitoring equipment required.
6. Real time monitoring and conveying that information to the public
  • Provide and maintain monitoring and ITS devices throughout the area network and include in the project costs
  • Coordinate construction phasing and signal timing with Montgomery County Traffic Management Center (TMC)
  • Coordinate construction activities with WMATA bus operations
  • Use existing resources to provide real time data (WMATA, WTOP, Mont Co., etc.)
  • TAR – Travel Advisory Radio
  • It is important that real time monitoring of traffic be maintained throughout the construction phasing of this project. This information also needs to be conveyed to the public, real time. Use of existing resources is required including radio, Montgomery County, and WMATA.
7. Maximize the benefit of the ultimate facility
  • Simulation modeling of ultimate facility for traffic flow improvements
  • Access management to shopping center
  • Remove EB Randolph Road left turn lanes to shopping center
  • Consider second cut and cover at Glenmont Circle and Randolph Road
  • Consider impacts of ICC
  • Provide Additional left turn lane out of the shopping center
  • Detailed Simulation modeling should be performed within the area network to maximize the benefit of the ultimate facility including a detailed analysis at all intersections. This should include the potential impacts of the ICC traffic (Ultimate and ICC Contract A), and growth of the shopping center.
  • Concern with intersection of Randolph Road and Shopping Center entrance. This intersection reduces the benefits of the project and alternatives should be looked at and considered including, a second cut and cover to take the express lanes under this intersection, eliminate or reconfigure turning movements (Remove left turn lane movement from express lanes), and provide an additional left turn lane out of the shopping center to reduce the green time required for this movement.
8. Minimize crashes during maintenance of traffic
  • Clear and accurate use of traffic control
  • Routine WZTC inspection
  • Reduce or eliminate conflicting turning movements in work zone
  • Provide contractor incentives for maintaining safe work zone
  • Remove vehicles quickly in the event of a crash or incident – consider performance spec for contractor
  • SHA and Contractor must make sure that the proper traffic control is in place at all times and that it is always clear and accurate. Routine inspections should be performed to ensure this.
  • Again, consider reducing or eliminating conflicting turning movements in the work zone.
  • Consider including contractor incentives in a performance spec for maintaining a safe work zone and for developing a system to quickly remove vehicles from the travel lanes in the event of a crash or incident.
<< Previous Contents Next >>
Updated: 10/31/2013
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000