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Home My WebLink About(0006) IR 10332 - Roundabout at Randol Mill Road and Precinct Line RoadINFORMAL REPORT TO CITY COUNCIL MEMBERS No. 10332 To the Mayor and Members of the City Council October 15, 2019 Page 1 of 4 i r SUBJECT: ROUNDABOUT AT RANDOL MILL ROAD AND PRECINCT LINE rrA ROAD The purpose of this report is to provide the basis for moving forward with a roundabout controlled intersection at Randol Mill Road and Precinct Line Road. The 2014 Bond Program identified improvements for Randol Mill Road from Old Randol Mill Road to Racquet Club Drive to be delivered in three phases in order to address traffic congestion. Phase 1, which consists of a left -turn lane with street surface and drainage improvements from Stone View Circle to Old Randol Mill Road was completed in March 2018. Phase 2, which includes intersection improvements with the construction of a single lane roundabout on Randol Mill Road at Precinct Line Road, drainage, street lights and pedestrian improvements, experienced schedule delays due to the need for additional public outreach. After several public meetings held with residents and city officials, Phase 2 is moving forward and construction began in August 2019. The estimated completion for Phase 2 is July, 2020. Phase 3, from Old Randol Mill Road to Precinct Line Road, is scheduled to be open to two-way traffic no later than October 18, 2019. Construction of Randol Mill Road from Precinct Line Road to Racquet Club Drive is scheduled to begin in January 2020. Earlier this year, the Transportation and Public Works Department hired MSA Professional Services, Inc. to perform an Intersection Controlled Evaluation at the Randol Mill Road and Precinct Line Road intersection. The evaluation report provided in May 2019 outlines the following key findings: • With regard to need The existing all -way stop control (AWSC) intersection operates at level of service (LOS) F during the PM peak period for existing traffic (year 2019). Analysis shows the AWSC intersection would experience oversaturated traffic conditions during the AM and PM peak period in year 2030 and 2040. The AWSC analysis proves the need for an enhanced form of intersection control at this location. • With regard to operational performance. See Table 1. The single -lane roundabout and traffic signal operate nearly identical in the AM and PM peak periods studied up to year 2040 with LOS A, B, or C results. The roundabout is anticipated to operate better than the traffic signal during the other 22 hours of the day within off-peak times. • With regard to safety. See Table 2. The single -lane roundabout is the safest form of intersection control with fewer predicted future fatal and injury collisions as compared to the traffic signal. A traffic signal at this location is five times more likely to experience a fatal or injury collision, as compared to a roundabout. • With regard to construction cost. See Table 3. For the traffic signal, a 250 foot storage length is required for the southbound left -turn and eastbound left -turn. In return, this requires pavement widening to take place west and north of the existing intersection. For the traffic signal, a westbound dedicated right -turn in combination with an exclusive westbound thru lane requires additional right of way (ROW) acquisition and/or permanent easement(s) in order to accommodate the roadway widening and ditch grading beyond the current ROW limits. The anticipated construction cost for the single -lane roundabout is approximately $200,000 more than the proposed traffic signal. However, when factoring in additional ROW acquisition and/or permanent easement(s) that would be needed, based on the proposed installation of a traffic signal, the traffic signal cost would be approximately the same as the roundabout cost. ISSUED BY THE CITY MANAGER FORT WORTH, TEXAS INFORMAL REPORT TO CITY COUNCIL MEMBERS No. 10332 To the Mayor and Members of the City Council October 15, 2019 Page 2 of 4 i r SUBJECT: ROUNDABOUT AT RANDOL MILL ROAD AND PRECINCT LINE rrA ROAD • Comparison The single -lane roundabout is the more sustainable solution as compared to the traffic signal. A traffic signal at this location would require routine maintenance due to signal re -timing, potential inundation of wiring/conductor due to storm runoff, and replacement of traffic signal equipment over the 20-year analysis period. MSA Professional Services took a holistic approach for comparing the existing all -way stop control condition, a proposed traffic signal, and a proposed roundabout. Based on the evaluation and analysis performed, staff recommended a single -lane roundabout as a long-term sustainable intersection control solution for Randol Mill Road at Precinct Line Road. Councilmember Bivens and City staff held a public meeting for District 5 residents on June 8, 2019, with approximately 22 attendees, to review the analysis for the proposed roundabout. Attendees supported and voted for the construction of a roundabout. Roundabouts in 2018 Bond Program Of the 22 named roundabout controlled intersections identified in the 2018 Bond Program, 11 have been revised to traffic signal controlled intersections. Of the I I traffic signal controlled intersections (M&C approved August 20, 2019), all but two were revised based on an engineering analysis or a traffic study. The two traffic signal locations at the intersection of Blue Mound Road and US Hwy 287 (northbound and southbound frontage roads) will remain traffic signal controlled intersections to avoid unnecessary City costs given the Texas Department of Transportation's plans to reconstruct the area in the next five years. Staff met with Councilmember Shingleton in March 2019 and agreed with having the two traffic signal controlled intersections at Blue Mound Road and US Hwy 287 remain. For reference, a list of roundabout controlled intersection projects that were revised to traffic signal controlled intersections is provided in Table 4. Staff will continue to perform traffic analysis on intersections in additional capital improvement program projects. If you should have any questions regarding this matter, please feel free to contact David V. Magana, P.E., City Engineer, at (817) 392-6558 or via email at david.maganakfortworthtexas.gov. David Cooke City Manager ISSUED BY THE CITY MANAGER FORT WORTH, TEXAS INFORMAL REPORT TO CITY COUNCIL MEMBERS No. 10332 To the Mayor and Members of the City Council October 15, 2019 Page 3 of 4 i r + SUBJECT: ROUNDABOUT AT RANDOL MILL ROAD AND PRECINCT LINE r 1? ROAD Table 1: Operational Analysis Results < > n Evaluation Criteria Year 2019 Peak Hr AM:D125.7s� AM: A(8.[Is] AM-.R1;9.6s� int�?r5H4'��nl�4d�dk'+g YM: Ff50.9s� PM: A(7.3s) PM: A(9.7s� Delaseconds Year 2030 Psak Hr Inters erGnn L05 and Avg per, FI53 Ssj AM-- B [11.4sy AM' B [10.55j Delay [seconds PM. P (113.15) PM; A (9.6s1 PM; 0 Year 2040 Peak Hr AM. IF(135.3s) AM. C (22.8s) AM: B (14.1s) Intersection uO5 and Avg PM: F (222-2s) PM: B (14.05) PM: B (11.25) Drla seconds Table 2: Annual Predicted Collisions Table 2 -Annual Predicted Collisions 3.17 2&G ' 2.23 197 LEGEND 2 12 1.26 L5 PDO - Property Damage Only 0.24 t 0.62 AWSC - All Way Stop Controlled Intersection fl AWSC TraPricSgpal Single -lane Roundabout ■ PDO ■ Fatal & Injury ■Ta[a Table 3: Total Study Period Costs (present costs) Traffic Signal Roundabout Estimated ROW Acquisition ISF) 6.000+ 0 Permanent Easement (SF) 36,769* 36,769* 2030 Peak Hour LOS (AM/PM) B f B 3 J A 2040 Peak Hour LOS (AMIPMI B f B C J B Estimated Constr. Cost S1.24M** $1.44M Estimated 20-yr Maintenance CDSt $0.06M $0.02M Estimated ZO-Yr Collision Cost (economic) $2.26M $0.66M Total 24-Yr Costs I $3.56M** $2.12M *Does not mdude temporary construction easement square footage **Does notinclude costs due toadditionalRO W acquisition, additional engineering design fees, additional adverUsing and bidding expenses, and additional City staff time to implement a chtinge in intersection control type ISSUED BY THE CITY MANAGER FORT WORTH, TEXAS 4 Intersection Reason for Revision Plue Mound Rd and US 287 Northbound Frontage Rd �E After recently converting frontage roads to one way, a traffic Blue Mound Rd and US 287 Southbound Frontage Rd signal is more efficient. Bonds Ranch Rd and FM 156 Avondale Haslet and Willow Springs North Rd Avondale Haslet and Willow Springs South Rd Avondale Haslet and Sendera Ranch Blvd Keller -Hicks Rd and Katy Rd Golden Triangle Ave and Harmon Rd Kroger Drive and Kroger Distribution Drive Kroger Drive and Park Vista Circle West TxDCT will be constructing the intersection and recommends a traffic signal. Recent traffic study indicates traffic signal is more efficient with local traffic. Recent traffic study indicates traffic signal is more efficient with local traffic. Recent traffic study indicates traffic signal is more efficient with local traffic. Concerns with adjacent Railroad Crossing and addition requirements to move forward with roundabout. Traffic signal is more efficient with local truck traffic. Traffic signal is more efficient with local truck traffic. Traffic signal is more efficient with local truck traffi 11 Park Vista Blvd and Keller Haslet Rd Traffic signal is recommended for temporary solution Park Vista's southbound lanes are built.