I-229/26 th St/Southeastern Ave Reconstruction Project

Transcription

1 I-229/26 th St/Southeastern Ave Reconstruction Project PCN 4778 & 0727 (I-229 Exit 5 Interchange) PCN 05JE & 05JF (26 th Street & Southeastern Avenue) PCN X04T (City Watermain and Sanitary Sewer) Pre-bid Meeting January 8, 2019 SF Convention Center Ballroom B CONFLUENCE 2014 HDR, all rights reserved.

2 Disclaimer: The following presentation is intended to provide an overview of the I-229/26 th Street/Southeastern Avenue project. The presentation is not intended to be part of the bid or contract documents. (Presentation slides will be posted on the project web site: 26thstreetcorridorstudy.com) Meeting Purpose: 1. Provide a project overview for prospective bidders. 2. Answer bidder questions about the project overview at the conclusion of the presentation. 3. Detailed questions should be submitted to the SDDOT bid letting web site. Disclaimer & Meeting Purpose

3 1. Project Area 2. Animations 3. Overall project 4. Concurrent projects 5. Key project features Bridges Roadway Retaining walls Aesthetic treatments 6. Construction sequencing (& timeframe) 7. Earthwork/borrow 8. Project risks Bike trail and pedestrians BNSF coordination Big Sioux River Environmental issues Private utilities 9. Public information 10. Questions Agenda

4 Pasley Park Big Sioux River 26 th Street Rotary Park North Project Area

5 3 interchange options (had up to 20) 7a skip 0:15 to 1:01; end at 1: Animations

6 Only townhouses will remain 2 intersection options (had up to 6) Used composite of Option A and C Option C move west & keep SE quadrant buildings 2014 Animations

7 Townhouses will remain Option A take SE quadrant buildings 2014 Animations

8 1 project for Concept Development, Interchange Study, Environmental Phases ( ) (SDDOT/City/HDR/Confluence team) 3 separate construction plan sets/pcns (reasons) Interchange (4778 & 0727) 475 plan sheets (IDG) Intersection (05JE & 05JF) 564 plan sheets (HDR) City Utilities (PCN X04T) 48 plan sheets (HDR) Total 1,087 plan sheets 1 construction timeframe & combined bid Bid letting is 1/23/19 3,700 By the numbers 1, th Street Interchange Project Intersection Project Cliff Avenue Greenhouse Project also includes I-229 high friction surface treatment east of Cliff Avenue Overall Project

9 New Rotary Park built in 2018 because existing entrance from 26 th Street will be eliminated. 26 th Street Cliff Avenue Greenhouse Overall Project

10 2020 City project will reconstruct SE Avenue to 18th Street (bid in Spring 2020) These projects correlate with SE Avenue closures. 26 th Street Cliff Avenue Greenhouse 2019 City project will overlay SE Avenue and line sanitary sewer to 49 th Street (bid in Spring 2019) Concurrent Projects

11 26 th Street Existing 57 wide 26 th Street New add 55 width Key Features Widened I-229 Bridge

12 Existing 300 long, 53 wide 26 th Street Southeastern Ave New 650 long, 95 wide 26 th Street Southeastern Ave Key Features New 26 th St. Bridge

13 Tapered width & shallow Shallow girders girders Tapered width & shallow Shallow girders girders Big Sioux River Existing bridge RR tracks Key Features New 26 th St. Bridge

14 City utilities designed for construction sequencing 11 +/- fill SE Ave Bury existing south side block wall Key Features Roadway Sections

15 View from SE Dental Center (ground level) Rendering Photo from ground floor Buildings removed 12/4/18 Key Features Roadway Sections Airplane photo

16 Geotechnical analysis showed negligible settlement 25 fill SE Ave Moved sanitary sewer to constructable and accessible location Key Features Roadway Sections

17 View from north of intersection Rendering Photo from street Key Features Roadway Sections Airplane photo

18 View from NW corner of intersection Rendering Photo from ground SDDOT Geotech staff comment Key Features Roadway Sections Airplane photo

19 Based on the geotechnical analysis, large panel MSE walls are proposed Initial MSE wall aesthetics Wall A Wall C Wall D Temporary wall B (in sequencing slides) Key Features Retaining Walls

20 Examples From plans: Concrete color Wave pattern from panel texture/form liners Recognize that aligning panels will be a challenge Preferred MSE wall aesthetics (in coordination with City Visual Arts Commission) Key Features Retaining Walls

21 On type C retaining walls: Natural rock color Ashlar stone pattern Common in Sioux Falls Remove old muffler Key Features Retaining Walls

22 Example On bridge barrier and piers: Concrete color Wave pattern Preferred aesthetics (in coordination with City Visual Arts Commission) Key Features Aesthetic Treatments

23 Example Pier close-up with cap lines & high water markings On bridge barrier and piers: Concrete color Wave pattern Preferred aesthetics (in coordination with City Visual Arts Commission) Key Features Aesthetic Treatments

24 Traffic Sequencing Maintain 2 lanes of traffic on 26 th Street Business owner criteria Needed for traffic flow Begin March/April 2019 West ramps open Build south half of 26 th St Maintain NB off-ramp traffic during construction Add access to Cliff Ave Greenhouse Keep access to Cliff Avenue Greenhouse and YMCA Construction Sequencing - Phase 1a

25 Traffic Sequencing Maintain 2 lanes of traffic on 26 th Street Construction Sequencing - Phase 1a (& 1b)

26 Traffic Sequencing Maintain 2 lanes of traffic on 26 th Street Construct south half of bridge Existing bridge New piers are offset from existing Pier type allows phased construction Southeastern Ave open Southeastern Ave closed Construction Sequencing - Phase 1a (& 1b)

27 Traffic Sequencing Maintain 2 lanes of traffic on 26 th Street Temporary retaining wall Southeastern Ave closed (City project to re-surface SE Avenue and re-line sanitary sewer to 49 th St) Construction Sequencing - Phase 1a (& 1b)

28 Traffic Sequencing Maintain 2 lanes of traffic on 26 th Street Contract Time Special Provision requires: Completion of Phase 1b by November 30, calendar days for west ramps Build south half of 26 th St Temporary retaining wall West ramps closed East ramps open Close one access to Cliff Avenue Greenhouse and YMCA after Sept. 15 Construction Sequencing - Phase 1b

29 Begin March/April 2020 Build north half of 26 th St Southeastern Ave closed (City project to reconstruct SE Ave to 18 th Street) Traffic on new 26 th St and ramps Southeastern Ave open Construction Sequencing - Phase 2

30 Build north half of bridge Traffic on south half of bridge Finish removing existing bridge Construction Sequencing - Phase 2

31 Fill in at temporary retaining wall Contract Time Special Provision requires lanes open to traffic by October 23, 2020 (incentive date). Can complete pavement markings, lighting/signals, etc. by November 13, Final completion by July 2, Timeframe reviewed by contractors at 2017 constructability meeting. Construction Sequencing - Phase 2

32 Option Borrow: 69,810 CY Interchange project 74,804 CY Intersection project 144,614 CY total Option Borrow Pit is at Veterans Parkway south of Madison Street. Per City request, 2019 BMP 7-4 project near 69 th & Sycamore will have waste material available (280,000 CY). Borrow Summary

33 26 th Street Big Sioux River Maintain bike trail with temporary box culvert Looking south 200 box culvert extends 50 past bridge construction Box culvert will be salvaged to SDDOT Area office after use. Project Risks Bike Trail & Pedestrians Box culvert will be in place throughout construction for: Protection of pedestrians Defined and protected equipment crossings

34 RR crossing number posted on Q & A site 26 th Street BNSF intends to have temporary signal installed by April 1, Project Risks BNSF Coordination

35 Project also includes 3 pipeline crossings of BNSF tracks (2 storm sewer, 1 sanitary sewer). Project team has been coordinating with BNSF since July th Street BNSF intends to remove all signal equipment at start of Phase 2 Construction. Project Risks BNSF Coordination City paying for flagging. Contractor executes separate agreement with BNSF (in Special Provisions).

36 City can close control gates to reduce normal flows for short term construction work. Generally requires extensive snow pack in BSR watershed. From plan sheet A8 Normal Big Sioux River Submerged pedestrian bridge September 2018 flood from Skunk Creek and other watersheds. Project Risks Big Sioux River

37 Northern Long-Eared Bat Potential Roosting Tree Removal Limitations Remove 175 trees north of 26 th Street between October 1, 2019 and April 1, Emerald Ash Borer consideration (sheet B7 plan note): To minimize spreading of the emerald ash borer, ash trees should not be removed between May 1 and September 1. Remove 86 trees south of 26 th Street by April 1, Project Risks Environmental Issues For Rotary Park project, City removed trees to meet April 1 timeframe.

38 Coordination with private utilities began in February Pictures on next slide Project Risks Private Utilities

39 Northern Natural Gas extended casing across 26 th Street in Xcel to relocate south side power line in early Last HDR review of Xcel plan was November Plans show all utility conflicts and actions. Sprint and MCI to relocate/lower fiber lines along RR tracks in 2019 and/or Project Risks Private Utilities

40 Public open house/meeting: February/March 2019 Led by design team Contractor attendance is expected. Public will be invited to part of the weekly construction meetings. Construction newsletters will be prepared and distributed by design team. See Special Provision for Traffic Control Supervisor. Public Information

41 Detailed questions should be submitted to the SDDOT bid letting web site. Presentation slides will be at project web site: 26thstreetcorridorstudy.com Pending addenda (for PCN 05JE/05JF): Correction in quantity for Class A45 Concrete, Bridge Correction in traffic control sequencing to match interchange plans Minor modifications to Northern Longeared Bat environmental commitment 26 th Street/BSR bridge plans from 1983 posted on the bid letting site. Overview Questions