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HomeMy WebLinkAbout04.b. Receive update on the Highway 4 Interchange Project Page 1 of 6 Item 4.b. CENTRAL SAN October 15, 2019 TO: ENGINEERING AND OPERATIONS COMMITTEE FROM: DANEA GEMMELL, PLANNING AND DEVELOPMENT SERVICES DIVISION MANAGER REVIEWED BY: JEAN-MARC PETIT, DIRECTOR OF ENGINEERING AND TECHNICAL SERVICES ROGER S. BAILEY, GENERAL MANAGER SUBJECT: RECEIVE UPDATE ON THE HIGHWAY4 INTERCHANGE PROJECT At the September 19, 2019 Board Meeting, the Board requested a staff report on the Highway 4 Interchange Project, including Central San utilities that are within CalTrans'jurisdiction, and dirt piles located on Central San's buffer property. Staff will review the attached presentation during the meeting. Strategic Plan re-In GOAL FIVE: Maintain a Reliable Infrastructure Strategy 3- Protect District personnel and assets from threats and emergencies ATTACHMENTS: 1. Presentation October 15, 2019 EOPS Regular Committee Meeting Agenda Packet- Page 51 of 66 Page 2 of 6 INTERSTATE 680 / STATE ROUTE 4 INTERCHANGE IMPROVEMENT PROJECT Danea Gemmell Planning & Development Services Division Manager Engineering & Operations Committee October 15, 2019 - INTERSTATE STATE ROOTS 4 PROJECT OVERVIEW INTERCHANGEE IMPROVEMENT PROTECT Joe uarr zOls PROJECT OVERVIEW TM iters 168o/Slate Route d Interchange Improvement fr 1 willween aPProximatety lour miles If SLile Route d between Morello Avenue in Martinez antl State Route oda • Add a third lane in east-bound & �angatnrtl�ein.d Ibwra ora-.d ,iredionz to improvre un.ramp west-bound directions of Highway 4 aoe ramam qi gTnis, IM first Phase ole multi-ph setl pgecl to improve safely iia 1 ip rHluce eo tat'onat Ne • Widening of five structures esae 680/5 ate RWto Modernizing Vital Project Elements Inter Cl.nty hTn P'Centra vga�rne c�ozz�mzolcmua Costa County.The project also inclutles witleninqo/five • �����rot nrg«nane�ne �arree Replacement of Grayson Creek sVucturesextenCingestbo a da��'suf " � te=a.° b1� Stale Route dswrpool lane asc ei aaun'°q Mpol«tW YsopovaemW. appoximately two miles. Ne n�aal wa a� uq�nno a.e r..vnc-9 uW. Bridge allatanP nl.105Gnq -" v.,Ldr,�d�,anm aM repacemenl of the Grayson meaan ra auee e+Ymm<m�*mpmlea rca�es Creek entlge.This project will + p�� ��Creek&dge. lay the ground—k for future -e_._ cereplaced winarow inre improvements to con-- P,­ onnectorPs.i Pmve tame safely. quss d<ansv�nan.allav up miM biujez. iia enhance traffic flow. gau�awrefuuwlarg M1nare plwcs Conslruclwn on this abases �$Ol"1On expectetl to be complete inarerynaraIro oenifgd late 20zl Muwge*M i-60aisaa rns<narKR AdEllbrlal Project Aefalls are ronnharoiczu.orn�m..mua soon m«loon available on CCTA4 wetaslt6 Funding a Solution to Ease Congestion antl Improve Safety proJecl Page ab wyolure oro«i�:wuv luras ��m MtP.//seta.net/zos8/ erouol ser w�uan mese<rmul ceT^rte son 1o/a)/i i—tate 68o- en"p oF<�cwln% c0'sy<ya sneav a state-route-d-interchange- augvmceu.e.ims mprovements/ urlvg.adnu�all g Iwmemre pq«�p.>sg ©https://www.ccta.net/wp-content/uploads/2019/05/Fact Sheet FINAL.pdf October 15, 2019 EOPS Regular Committee Meeting Agenda Packet- Page 52 of 66 1 Page 3 of 6 MAP / CFNTPALSAN 1 \\ r y. I _ L • DEVELOPMENT SERVICES INSPECTIONS • The Development Services Section issued a permit with a deposit for inspections to monitor Central San facilities • Inspections have been completed by the Development Services Construction Inspectors which included: • Potholing/locating 39-inch sanitary sewer crossing Highway 4 along the creek • Oversight of pier drilling near 39-inch sanitary sewer • Electronic Testing Station relocation • Brosamer & Wall has kept the Construction Inspector informed, often calling to check on things even if they do not pertain to Central San CFNTPALSAN 14 October 15, 2019 EOPS Regular Committee Meeting Agenda Packet- Page 53 of 66 2 Page 4 of 6 CURRENT CONDITIONS NOTE: GGE� ToE 1. INFORMATION SHOWN HEREON IS BASED UPON A SURVEY DATED 9/26/19. 2. INVERT ELEVATIONS WERE - 1113C5-M4 SCALED FROM AS-BUILT PLANS , yLS 3. VERTICAL DATUM: NORTH / AMERCIAN VERTICAL DATUM OF 1988 (NAVD88) Bay Cities Paving w &Grading Lease Liedstrand Lease I 1 I Q Q 0 4.00 Acres .75 Acres ql'I a N I � Q / gD1P SS M �O / "PE-OF FILL ..... w rJ 43� _.. W NI��I 1305-M3 TOCK PILE 70P'OF FILL 40 W TOE OF FILL / y R 0 100 200 i ? O N I III 5—M14 Dc CENTRALSAN GEOTECHNICAL ENGINEER HAS CONFIRMED NO IMPACT ON CENTRAL SAN PIPE 0 50 100 N -- __ _ 1►= =- Protection am I sToc ZoneI 1 (4a.8' HIGH) 0 _.1 x�a.7 Bay Cities Paving o 2' 1 3.5 &Grading Lease a 1 4.00 Acres 259 . / \ 1 26.2 C /x26.3 26.2 �- ASE.LINE_ _ 25.2 '! ._,TOE OF piLL' n _— 24.6—TOP SLOP x22.6_ -- _ - — — -- 21.7 — — TOE SLOPE — 2t2 r 121.6 20.5 39"RC 21.9' 21.5 39"RC 1 N 1385-MI4 I 13C5-M3 luo 130-M47 21.3 RIM I 21.2 R/M 22.0 RIM 7t E 3. INV 3.9-* /NV 4 4.0t INV STATE HMi CFNTRAL SAN October 15, 2019 EOPS Regular Committee Meeting Agenda Packet- Page 54 of 66 3 Page 5 of 6 AIRPORT COMMUNICATIONS • Brosamer & Wall and Central San staff have been coordinating r with Airport staff on stockpile height 5° acn � PPP�O r r • 9/26/19 Survey indicates height 125.5 at approximately 49 feet; which ^o o"jel � Y is well below 75.5 feet height APN 159140051 1. limitation per Federal Aviation i 155 Administration Design s P \ Guidelines y n 55. CFNTPALSAN HIGHWAY 4 WIDENING SURVEY NOTES SIX-FEET OF FILL NEXT TO PIPE 0 50 100 J Protection / Zone / Bay Cities Paving &Grading Lease 4.00 Acres I I I - - 1 i i° 20a 39"RC 21.E 21-5 39'RC 2'1-.8 PARCEL LINE _ -F_ _ -->1.4 _ TOE OF FILL �q 21 _ _ 21.5 X26.3 27.6 28.1 TOP OF FILL X27,5 x25.6I 6.2' OF FILL g O _ G 13B5-M14 1 13C5-M3 'ao 1JC5-M4 21.3 RIM o 21.2 RIM o M 3.73 INV ^ 3.93 INVA 4.01 INV _0 p ;STATE HWY i Y16 October 15, 2019 EOPS Regular Committee Meeting Agenda Packet- Page 55 of 66 4 Page 6 of 6 CROSS SECTION AT 39-INCH PIPE 900 900 80 + 71 — - + 7 — C T — C + — C _ — C 80 - C - CIS — C — C_ . FI'rCC � — C C - C - - - - - - - - — -I= - - - _ — – - - L1 - - L J LL L 60 z — 60 � - lt - 11 -1 1J - L1 _ _ L1® I - L o 40 — — O a 40 E — — 16.2'of Fill 70 7 -77-------—-------NATURALGROUND---- - - 21 11 A-_ LE I_ _- _L a L_ p TOP 7.1 0 0+00 1+00 2+00 3+00 3+60 CROSS-SECTION HORIZ: 1" = 40' 0 40 80 VERTICAL: 1" CENTRALSAN =20' 1 October 15, 2019 EOPS Regular Committee Meeting Agenda Packet- Page 56 of 66 5