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TR9301-CN 910924AGENDA REQUEST FORM ITEM CAPTION: Consideration of approving a ~ontract with Barton-Aschman & Associates, Inc. to provide traffic engineering on two (2) signal warrant studies and seven (7) Multiway Stop Sign Analyses in the amount not to exceed $12,771.00, and authorizing the City Manager to sign. SUBMITTED STAFF REP.: OTHER REP.: M. Shohre Danmshmand Acting City Engineer DATE: 9/t6/9i This contract will allow Barton-Aschman to evaluate the feam'bility of {-~talling traffic signals at Mockingbird/Samuell and Bethel/Coppen Roads. In addition, an analysis of the effectiveness of stop signs will be evaluated along Mockingbird at Sparrow, Oriole, and Cherrybark; along Heartz at Bethel School, Vanbebber, and Braewood and Vanbebber and Edgewood. Barton--Aschman commended_ to l~'o~de these .~rarices for a variety of rea~,, lmong them.' · over 60% of thi~ firms work i~ directly traffic oriented · they are recognized as a leader in the field of transportation engineering · with over 19 offices throughout the U.S.A., they can draw resources from a variety of te~h-ical experts · we have had excellent results from earlier work they have done for the City of Coppell · they provide q,,mlity work, reliable data, credible results within budget · their fees are competitive in the market place BUDGET AMT. AMT +/- BUDGET APPROVED BY CITY C © L 'q C) L DATE_ 'AMT. ESTIMATI]I) FINANCIAL REVIF, W BY COMMENTS: This project will not be receiM~d If the Council approves,the funds from FY 1991. LEGAL REVIEW BY: AGENDA REQUEST NORM ~ 1/91 in its entirety this fiscal year. for this project will come entirely REVIEWED BY CM: Barton. Aschman Associates, Inc. 5485 Belt Line Road, Suite 199 Dallas, Texas 75240 USA Phone: (214) 991-1900 Fax: (214) 490-9261 Metro: 263-9138 September 12, 1991 Ms. M. Shohre Daneshmand, P.E. Acting City Engineer City of Coppell 255 Parkway Boulevard Coppell, Texas 75019 RE: Proposal for Traffic Engineering Studies Dear Ms. Daneshmand: Barton-Aschman Associates, Inc. is pleased to submit this proposal to provide professional transportation engineering services in connection with performing traffic signal warrant analyses and multiway stop warrant analyses for locations in the City of Coppell. We have prepared a scope of services and fee estimates based on our recent telephone conversations and your fax dated September 6, 1991. If accepted, this letter will become an agreement between the City of Coppell (CLIENT) and Barton-Aschman Associates, Inc. (BA) to provide the services outlined in the Scope of Services presented in this proposal. PROJECT PURPOSE The purpose of this study is to assist the City of Coppell indetermining the appropriate traffic control needs at various intersections based upon engineering and traffic investigations. The study locations are divided into the following groups or phases: Phase I Objective: Investigate the feasibility of installing signalization. 1. MacArthur Blvd. and Samuel Blvd. 2. Bethel Rd. and Coppell Rd. Ms. M. Shohre Daneshmand, P.E. September 12, 1991 Page 2 Phase II Objective: Investigate the feasibility of removing existing multi-way stop sign control. 1. Mockingbird Ln. and Sparrow Ln. 2. Mockingbird Ln. and Oriole Ln. 3. Mockingbird Ln. and Cherrybark Dr. 4. Heartz Rd. and Bethel School Rd. SCOPE OF SERVICES 5. Heartz Rd. and Vanbebber Dr. 6. Heartz Rd. and Braewood Dr. 7. Vanbebber Dr. and Edgewood Dr. TASK I - DATA COLLECTION 1.1 Conduct 24-hour approach machine traffic volume counts at each study location. 1.2 Conduct peak period manual turning movement counts at each study location to determine special control considerations. 1.3 Collect traffic accident data for the latest 12-month period (July 1990 - July 1991 ). TASK 2 - ON-SITE BASED AND FIELD RECONNAISSANCE 2.1 Visit the study locations during critical peak traffic periods to observe traffic operations. 2.2 Prepare current condition diagram of the study location showing all markings, lanes, signs, medians, major sight obstructions, intersection control, and other important features. TASK 3 - WARRANT ANALYSIS 3.1 Prepare detailed collision diagrams illustrating a 12-month accident history. 3.2 Evaluate each Study location to determine whether traffic conditions warrant signal control on the basis of TMUTCD Section 4C. 3.3 Perform capacity analysis of the intersections for the critical peak hour using Highway Capacity Manual procedures. PHASE I Our Scope of Services includes the work described in the following tasks and encompasses the work effort involved in performing a traffic signal warrant study and a multi-way stop sign warrant analysis. Ms. M. Shohre Deneshmand, P.E. September 12, 1991 Page 3 TASK 4 - STUDY DOCUMENTATION 4.1 Document the study process, performed analysis, and the study results in a Technical Memorandum. PHASE II TASK I - DATA COLLECTION 1.1 Conduct 24-hour approach traffic volume counts at each study location. 1.2 Conduct AM and PM peak hour manual turning movement counts at each study location to determine special control considerations and to have a basis for operation analyses. 1.3 Collect traffic accident data for the latest 12-month period (August 1990 - August 1991). TASK 2 - ON-SITE OBSERVATIONS AND FIELD RECONNAISSANCE 2.1 Visit the study locations during critical peak traffic periods to observe traffic operations. 2.2 Prepare current condition diagram of the study location showing all markings, lanes, signs, medians, major sight obstructions, intersection control, and other important features. TASK 3 - WARRANT AND OPERATIONS ANALYSES 3.1 Prepare detailed collision diagram illustrating a 12-month accident history. 3.2 Evaluate each study location to determine whether traffic conditions warrant multiway stop control on the basis of TMUTCD Section 2B-6. 3.3 Perform capacity and delay analysis for each study location for existing and proposed or alternative conditions using TRANSYT-TF and procedures outlined in Transportation Research Interim Circular Number 373 "Materials on Unsignalized Intersection Capacity". 3.4 Develop schematics showing recommended improvements. TASK 4 - STUDY DOCUMENTATION 4.1 Document the study process, performed analysis, study results, and the recommended improvements in a report. Ms. M. Shohra Daneshmand, P.E. September 12, 1991 Page 4 ADDITIONAL SERVICES The following are considered additional services and are not included in our fee estimate. If BA is requested by the CLIENT to provide any of these services, we will first provide an estimate of our cost. 1. Investigate the feasibility of installing multi-way stop sign control. a. Meadow Run and Woodmore Drive b. Phillips Drive and Hood Drive c. Phillips Drive and Harrison Drive d. Bethel School Road and Moore Road e. Bethel School Road and Mockingbird Lane 2. Collect traffic volume data and perform intersection analysis. a. Sandy Lake Road (from Coppell Road to Eastern City Limits) b. Sandy Lake Road and MacArthur Boulevard c. Sandy Lake Road and Samuel Boulevard d. Sandy Lake Road and Moore Road PROJECT STAFF K.R. Marshall will serve as the Project Advisor. Don Glenn will be the Project Manager/Engineer. Appropriate consulting staff personnel will assist. FEE FOR SERVICES AND METHOD OF PAYMENT The fee for completing the project will be based on our hourly rates for staff personnel, current at the time of performance, for staff services rendered. The maximum fee and expenses for completion of Phases I and 2 will not exceed $12,771.00 without receiving prior written authorization from the CLIENT. Attachment A gives the time and fee estimates for the proposed Scope of Services for each Phase. Direct reimbursement for reasonable out-of-pocket expenses such as mileage, reproduction, etc., will be billed at cost and will be added to the staff time costs incurred on the project. Invoices will be submitted monthly and will indicate charges incurred during the preceding month. Billings are due and payable within thirty (30) days of invoice date. A one and one- half (1.5) percent carrying charge will be added each month to all past due accounts. AUTHORIZATION We are prepared to initiate work on this project upon receipt of a signed copy of this Letter of Agreement. This proposal will remain valid for thirty days. Ms. M. Shohre Daneshmand, P.E. September 12, 1991 Page 5 We appreciate the opportunity to submit this proposal and look forward to assisting you on this project. If you have any questions regarding this proposal, please do not hesitate to call. Sincerely, BARTON-ASCHMAN ASSOCIATES, INC. Kenneth R. Marshall, P.E. Senior Associate ACCEPTED AND APPROV, Ep_BY: / ~/.~i~,. / /I../......~., Signature~ - Printed or Ty~d Name KRM:rmb City Manager (Title) AUTHORIZED TO EXECUTE AGREEMENTS FOR: City of Coppell Organization den~d~n~h.991 APPROVED BY CITY COUNCIL ATTACHMENT A - FEE ESTIMATE Phase I - Signal Warrant Analyses Project Project Task ' Description Advisor Mgr./Engr. Associate Technical Clerical Data Collector 1 '2 3 4 Data Collection 2 Observations & Field Reconnaissance 2 Warrant Analysis 2 4 10 2 Study Documentation 2 4 TOTAL HOURS 4 12 25 8 RATE/HOUR $ 98.00 $ 72.00 $ 60.00 $ 50.00 LABOR COST $ 392.00 $ 864.00 $1,500.00 $ 400.00 TOTAL LABOR COST $3,371.00 MACHINE COUNTS $ 700.00 DIRECT EXPENSES $ 250.00 Mileage, Computer, Printing, Telephone, Etc. TOTALPROJECT COST $3,621.00 4 35.00 140.00 5 $ 15.00 $ 75.00 Phase II - Multi-way Stop Analyses Project Project Task Deecription Advisor Mgr./Engr. Aesociata Technical 1 Data Collection 2 2 Clerical Data Collector 30 2 ' Obaervatione& Field 14 14 Reconnaissance 3 Warrant & Intersection 2 12 20 8 Analysis 4 Study Documentation 4 8 8 4 6 TOTAL HOURS 6 36 44 18 8 30 RATE/HOUR $ 98.00 $ 72.00 $ 60.00 $ 50.00 $ 35.00 $ 15,00 LABOR COST $ 588.00 $2,592.00 $2,840.00 $ 900.00 $ 280.00 $ 450.00 TOTAL LABOR COST MACHINE COUNTS DIRECT EXPENSES Mileage, Computer, Printing, Telephone, Etc. $7,450.00 $1,400.00~ $ 300.00 TOTAL PROJECT COST $9,150.00 Assumes CLIENT will provide traffic volume data for three of the seven intersections.