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Home My WebLink AboutReg 2018-02-20 Item 5A - Ordinance - Speed Reduction on 42nd Avenue South (124th Street South to Interurban Avenue South) for AASHTO Types 1-3 TrucksCOUNCIL AGENDA SYNOPSIS Meeting Date Prepared by Mayor's revOr Council review 02/12/18 RT(cr5( .--- fl Resolution A I t‘g Date 02/20/18 RT (2,421 i4tI. • Other Altg Date SPONSOR iii council Mayor IIR 0 DCI) "inance Fire • IT P&R Police PUD SPONSOR' S Council is being asked to approve an Ordinance that will reduce the speed limit for trucks SUMMARY only on 42nd Avenue South from the current speed of 25 mph to 15 mph from South 124th Street to Interurban Avenue South. This section of roadway includes the 42nd Avenue South Bridge. After a bridge inspection and load rating was performed on the 42"d Ave S Bridge, a load restriction is required for certain truck weights using the bridge. The least impactful option was to reduce the speeds of all trucks crossing the bridge. RI ATI !WI A ) BY 0 COW Mtg. 11 CA&P Cmte fl F&S Cmte Eil Utilities Cmte Arts Comm. fl Parks Comm. DATE: 01/22/18 COMMITTEE CHAIR: 1 Transportation Cmte E] Planning Comm. THOMAS MCLEOD RECOMMENDATIONS: SP( )NSOR/ADMIN. CommITIEF, ITEM INFORMATION ITEM No. 5.A. STAFF SPONSOR: ROBIN TISCHMAK ORIGINAL AGENDA DATE: 02/12/18 AGHNI),\ IIT TITLE Ordinance for Truck Only Speed Reduction for 42nd Avenue South from South 124th Street to Interurban Avenue South CATIGORY Discussion Mtg Date 02/12/18 fl Motion Mfg Date fl Resolution A I t‘g Date Z Ordinance Mtg Date 02/20/18 fl Bid Award Mtg Date Public Hearing Mtg Date • Other Altg Date SPONSOR iii council Mayor IIR 0 DCI) "inance Fire • IT P&R Police PUD SPONSOR' S Council is being asked to approve an Ordinance that will reduce the speed limit for trucks SUMMARY only on 42nd Avenue South from the current speed of 25 mph to 15 mph from South 124th Street to Interurban Avenue South. This section of roadway includes the 42nd Avenue South Bridge. After a bridge inspection and load rating was performed on the 42"d Ave S Bridge, a load restriction is required for certain truck weights using the bridge. The least impactful option was to reduce the speeds of all trucks crossing the bridge. RI ATI !WI A ) BY 0 COW Mtg. 11 CA&P Cmte fl F&S Cmte Eil Utilities Cmte Arts Comm. fl Parks Comm. DATE: 01/22/18 COMMITTEE CHAIR: 1 Transportation Cmte E] Planning Comm. THOMAS MCLEOD RECOMMENDATIONS: SP( )NSOR/ADMIN. CommITIEF, Public Works Department Unanimous Approval; Forward to Committee of the Whole COST IMPACT / FUND SOURCE EXPENDITURE REQUIRED AMOUNT BUDGETED APPROPRIATION REQUIRED $0.00 $0.00 $0.00 Fund Source: 000.16 STREET Comments: Cost of signs is estimated to be $881.10. MTG. DATE RECORD OF COUNCIL ACTION 02/12/18 Forward to next Regular Meeting 02/20/18 MTG. DATE ATTACHMENTS 02/12/18 Informational Memorandum dated 01/19/18 Ordinance _ TranTech Engineering's 42nd Ave S Bridge Structural Assessment Bridge Rating Summaries - Low Speed Option and One Truck at a time Minutes from the Transportation & Infrastructure Committee meeting of 01/22/18 02/20/18 Ordinance 24 City of Tukwila Washington Ordinance No. AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF TUKWILA, WASHINGTON, ESTABLISHING NEW REGULATIONS TO ACCURATELY DEFINE THE PORTION OF 42ND AVENUE SOUTH BETWEEN 124TH STREET SOUTH AND INTERURBAN AVENUE SOUTH WHERE THE SPEED LIMIT IS TO BE REDUCED FROM 25 MPH TO 15 MPH FOR AASHTO TYPE 1, 2, AND 3 TRUCKS ONLY; REPEALING ORDINANCE NO. 1801, AS CODIFIED AT TUKWILA MUNICIPAL CODE SECTION 9.16.060; PROVIDING FOR SEVERABILITY; AND ESTABLISHING AN EFFECTIVE DATE. WHEREAS, American Association of State Highway Officials (AASHTO) defines a Type 1 truck as a three -axle truck limited to 25 tons; and WHEREAS, AASHTO defines a Type 2 truck as a three -axle truck with a two -axle single trailer limited to 36 tons; and WHEREAS, AASHTO defines a Type 3 truck as a three -axle truck with two, double - axle trailers limited to 40 tons; and WHEREAS, Title 23 Code of Federal Regulations (CFR) subpart c, National Bridge Inspection Standards (NBIS) Section 650.313 (c) states: "Post or restrict the bridge in accordance with the AASHTO Manual or in accordance with State law, when the maximum unrestricted legal loads or State routine permit loads exceed that allowed under the operating rating or equivalent rating factor"; and WHEREAS, AASHTO Manual for Bridge Evaluation 2nd Edition 2011 — with 2016 Interim Revisions, Section 6A.8.1 and Section 68.7.2, states, "When the maximum legal load under state law exceeds the safe load capacity of a bridge, restrictive posting shall be required"; and WHEREAS, the bridge crossing the Duwamish River on 42nd Avenue South, also known as Tukwila -14, structure ID 08109700, has been determined to require a restriction to the legal truck loads for AASHTO truck Type 3, which includes a reduction to the speed limit from 25 MPH to 15 MPH for all AASHTO truck types; and W: Word Processing\Ordinances\Speed limit reduction for AASHTO Type 1,2,3 trucks 2-12-18.doc SC:bjs Page 1 of 3 25 WHEREAS, RCW 46.61.415 authorizes the City to alter speed limits on the basis of engineering and traffic investigations; and WHEREAS, an engineering investigation was conducted in the form of a load rating analysis of 42nd Avenue South between South 124th Street and Interurban Avenue South; and WHEREAS, based upon the load rating analysis, the City has determined that 15 miles per hour is a reasonable and safe maximum limit for AASHTO Type 1, 2, and 3 trucks traveling on 42nd Avenue South between South 124th Street and Interurban Avenue South; NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF TUKWILA, WASHINGTON, HEREBY ORDAINS AS FOLLOWS: Section 1. Repealer. Ordinance No. 1801, as codified at TMC Section 9.16.060, "South 124th Street, 42nd Avenue South, and 50th Place South," is hereby repealed. Section 2. TMC Section 9.16.060 Reenacted. Tukwila Municipal Code Section 9.16.060 is hereby reenacted to read as follows: 9.16.060 South 124th Street, 42nd Avenue South, and 50th Place South A 25 MPH speed limit is established on certain collector arterials as follows: 1 South 124th Street from 42nd Avenue South to 50th Place South. 2. 42nd Avenue South from Interurban Avenue to South 115th Street; except that Type 1, Type 2, and Type 3 trucks, as defined by the American Association of State Highway Officials (AASHTO), shall be restricted to a maximum speed of 15 MPH. 3. 50th Place South from South 124th Street to the east City limit. Section 3. Signs to be Posted. The Public Works Department is hereby directed to post appropriate speed limit signs reflecting the speed limits established in Section 2 of this ordinance. Section 4. Corrections by City Clerk or Code Reviser. Upon approval of the City Attorney, the City Clerk and the code reviser are authorized to make necessary corrections to this ordinance, including the correction of clerical errors; references to other local, state or federal laws, codes, rules, or regulations; or ordinance numbering and section/subsection numbering. Section 5. Severability. If any section, subsection, paragraph, sentence, clause or phrase of this ordinance or its application to any person or situation should be held to be invalid or unconstitutional for any reason by a court of competent jurisdiction, such invalidity or unconstitutionality shall not affect the validity or constitutionality of the remaining portions of this ordinance or its application to any other person or situation. W: Word Processing\Ordinances\Speed limit reduction for AASHTO Type 1,2,3 trucks 2-12-18.doc 26 SC:bjs Page 2 of 3 Section 6. Effective Date. This ordinance or a summary thereof shall be published in the official newspaper of the City, and shall take effect and be in full force five days after passage and publication as provided by law. PASSED BY THE CITY COUNCIL OF THE CITY OF TUKWILA, WASHINGTON, at a Regular Meeting thereof this day of , 2018. ATTEST/AUTHENTICATED: Christy O'Flaherty, MMC, City Clerk APPROVED AS TO FORM BY: Rachel B. Turpin, City Attorney Verna Seal, Mayor Pro Tempore Filed with the City Clerk: Passed by the City Council: Published: Effective Date: Ordinance Number: W: Word Process ng \Ordinances\Speed limit reduction for AASHTO Type 1,2,3 trucks 2-12-18.doc SC:bjs Page 3 of 3 27