Non-Motorized Overpass at SR 5/US1

Transcription

1 Non-Motorized Overpass at SR 5/US1 And SR 97/SW th Street (Bird Road) Executive Summary March 9, 17 Prepared By: MARLIN Engineering Inc 17 NW th Avenue, Ste. 1 Plantation, FL P:

2 Non-Motorized Overpass at SR 5/US1 and SR 97/SW th Street (Bird Road) (FM No ) EXECUTIVE SUMMARY Project Description: Concept and Feasibility Analysis for a non-motorized overpass for pedestrian and bicycles to support the Underline adjacent to US-1 at SW th Street (Bird Road). Purpose: The Department requested a conceptual and feasibility analysis to identify, evaluate, and recommend potential alignments for a non-motorized overpass. This conceptual analysis consisted of: Typical Section Analysis Horizontal and Vertical Geometric Analysis Traffic Control Analysis Background: The study was conducted at US 1 at th Street adjacent to the Underline, a proposed 1 mile signature linear park and urban trail. The Underline will serve as a gateway to the adjacent communities, by improving physical access from north to south running from underneath the Metrorail line and parallel to US1. Need: At this specific location, the traffic congestion is impacting the safety of pedestrians and bicyclists crossing SW th Street. Methodology: The feasibility study included the following tasks; Field review of existing conditions Analyze existing Right of Way Maps and Survey (topography) Obtain aerial images of the proposed study area Performed horizontal and vertical geometric analysis Coordination with local companies that manufacture pre-fabricated bridges to obtain preliminary cost estimates and engineering specifications Performed a conceptual Right of Way cost analysis of the adjacent properties within the study area Development of design criteria Development of concept alternatives including typical section, plan and profile. Existing Conditions: US 1 at SW th Street is a skewed intersection approximately. miles southwest of the Coconut Grove Metrorail station. There are pedestrian signals and high visibility pedestrian crossings on the south approach of US-1, and on the west approach on SW th Street. There is also a pedestrian crossing on Hibiscus St. adjacent to the intersection. There are no bicycle lanes on the streets and arterials. Proposed Improvements: 1

3 Non-Motorized Overpass at SR 5/US1 and SR 97/SW th Street (Bird Road) (FM No ) The proposed alternative is a non-motorized overpass for pedestrians and bicyclists, with grades not exceeding 3%, that will require a 7 foot long prefabricated bridge consisting of spans ranging from 115 feet to 1 feet in length (See Appendix A, Sheets 1 thru ). The abutment located at the begin bridge location will be placed on the south side of SW th Street, at least 1 feet from the edge of pavement. There is a need to provide a bridge pier at the existing Metrorail pier protection between WB and EB on SW th Street. The remaining bridge piers and the abutment for the end bridge location will be constructed between the Metrorail tracks and US-1. The bridge will extend to just north of the US-1 SB right turn lane due to the lateral constraint between the Metrorail tracks and the existing edge of pavement. LOCATION MAP: SW TH ST (BIRD ROAD) The remainder of the pedestrian overpass will be constructed using retaining walls and gravity walls with bicycle railings on the wall copings. Gravity walls will be used at the approaches to the Underline at the ground level on both sides. The south portion of the overpass will be constructed south of the Metrorail tracks, within the Metrorail right-ofway. The north portion of the overpass will be constructed between the Metrorail tracks and US-1, within the Metrorail right-of-way.

4 Non-Motorized Overpass at SR 5/US1 and SR 97/SW th Street (Bird Road) (FM No ) Traffic Control: The construction of the pier located on SW th St will be done by closing the inner lanes on each direction on the west leg of the intersection of SW th St and SR5/US1 using standard temporary concrete barrier wall to separate the work zone from the travel lanes. The construction of all the bridge piers on the north leg of the intersection will be done by closing the SB RT lane and/or by closing the outermost SB lane using temporary concrete barrier wall. For the construction of the bridge pier south of SW th St, the construction of the retaining walls, gravity walls and shared-use path, no lane closures are required. Only very short duration closures may be expected to provide access to construction equipment. Closures on SB US1 will be required in order to erect the bridge superstructure north of SW th Street and night operations are recommended. Mounting/assembling of the bridge superstructure over the EB and WB SW th St. will require a temporary detour, and closing SW th St. NW 37th Ave can be used as a detour route. Also, lane closures on SB US1 will be required, and night operations are preferred. 3

5 Non-Motorized Overpass at SR 5/US1 and SR 97/SW th Street (Bird Road) (FM No ) Right of Way Availability: Based on our analysis, for proposed improvements an estimated area of approximately 15, square feet from the property belonging to Miami Dade County (Metrorail) will have to be transferred to the Department. Miami Dade Transit Concerns: In consultation with Miami Dade Transit, 5 of clearance from the drip edge of the Metrorail structure to the proposed overpass structure is feasible, however, there are a number of concerns. The proximity of the 75 kv electrified third rail which is next to the Metrorail tracks. Noise level from the Metrorail will be significant to the pedestrians and bicyclists, therefore, further analysis of the noise will be required. The proximity of the existing Metrorail foundations to the proposed overpass foundations. Any construction near their foundations have a time restriction from 1am to am. Schedule PEDESTRIAN OVERPASS AT US 1 AND BIRD ROAD No. Activity Description Design (Working Days) Construction (Working Days) 1 1'X1' TRUSS ( Spans) 5 17 APPROVAL OF DRAWINGS 3 3 SUBSTRUCTURE 9 15 ROADWAY (WALLS AND PATH) 1 Schedule Total Days (Calendar Days) 5 3 Cost Estimate: The total estimated construction cost is $5,,3.. The estimate is based on the Master Pay Item List (January 1 to June 1 Area 13). The cost estimate for the pre-fabricated bridge was obtained from the manufacturer. Fatal Flaws: No fatal flaws were identified; however, a more detailed analysis is recommended. Recommendations: Based on this study s findings, the non-motorized overpass improvement is recommended for further design development as a safety project under the Highway Safety Program.

6 Non-Motorized Overpass at SR 5/US1 and SR 97/SW th Street (Bird Road) (FM No ) APPENDIX A 5

7 CURVE DATA C1 PI STA. = CURVE DATA C11 PI STA. = POT STA. 1+. T =.9 L = 7.95 R = 1. R = 1. PC STA. = PT STA. = 1+7. PT STA. = T = 5.5 L =.9 PC STA. = 1+7. PC STA PI STA UNDERLN I E C1 PRC STA C11 PI STA PRC STA BEGIN PEDESTRIAN OVERPASS BEGIN S 1+7. END S BEGIN S PEDESTRIAN OVERPASS 1 1.' CLEAR N True North 1 Feet MetroRail S N Direction of Travel 15 CURVE DATA C1 PI STA. = 1+9. C T =.5 L = 79.5 R =,53.5 PC STA. = PT STA. = BEGIN PEDESTRIAN OVERPASS BEGIN PI +7., EL END BEGIN PI , EL..53 (+).1% (+) 3.% (+) 3.% (+) 3.% PEDESTRIAN/BICYCLE RAILING GROUND LINE REVISIONS MARLIN ENGINEERING, INC. 17 NW Ave., Ste. 1 Plantation, FL (35) C.A. No. 1 STATE OF FLORIDA DEPARTMENT OF TRANSPORTATION ROAD NO. COUNTY FINANCIAL PROJECT ID SR-5 MIAMI-DADE ROADWAY PLAN & PROFILE BIRD ROAD OVERPASS SHEET NO. 1 rlagos //17 3:53: PM K:\155.1 NonMotorizedPedBikeUS1\153313\roadway\PLAN\PLANRD1.dgn

8 N True North CURVE DATA C1 PI STA. = 1+9. PI STA SR-97/SW th STREET/BIRD ROAD END S BEGIN PEDESTRIAN OVERPASS BRIDGE ' CLEAR C1 19 BRIDGE PIER +.3 PEDESTRIAN OVERPASS PEDESTRIAN OVERPASS BRIDGE 11 Feet S N MetroRail Direction of Travel BRIDGE PIER +.3 PT STA T =.5 L = 79.5 R =,53.5 PC STA. = PT STA. = SR-5/S. DIXIE HIGHWAY PI +7.7, EL 1.7 PEDESTRIAN/BICYCLE RAILING GROUND LINE END PEDESTRIAN OVERPASS BRIDGE BEGIN PEDESTRIAN OVERPASS BRIDGE (+) 3.% (+) 3.% (+) 3.% +7.7 EL MINIMUM 17.5' VERTICAL CLEARANCE GROUND LINE ' V.C REVISIONS MARLIN ENGINEERING, INC. 17 NW Ave., Ste. 1 Plantation, FL (35) C.A. No. 1 STATE OF FLORIDA DEPARTMENT OF TRANSPORTATION ROAD NO. COUNTY FINANCIAL PROJECT ID SR-5 MIAMI-DADE ROADWAY PLAN & PROFILE BIRD ROAD OVERPASS SHEET NO. rlagos //17 3:53:5 PM K:\155.1 NonMotorizedPedBikeUS1\153313\roadway\PLAN\PLANRD.dgn

9 True North N BRIDGE PIER +.3 PEDESTRIAN OVERPASS 3 BRIDGE PIER +1.3 METRORAIL TRACK METRORAIL TRACK MetroRail S N Direction of Travel PEDESTRIAN OVERPASS BRIDGE BRIDGE PIER ' CLEAR 1 Feet END PEDESTRIAN OVERPASS BRIDGE BEGIN S SR-5/S. DIXIE HIGHWAY (+) 3.% PI +3.9 EL. 9.9 (-) 3.% PI +1. EL. 1.5 PEDESTRIAN OVERPASS BRIDGE END PEDESTRIAN OVERPASS BRIDGE BEGIN PI +31.3, EL PEDESTRIAN/BICYCLE RAILING (-) 3.% (-) 3.% (-) 3.% (-) 3.% ' V.C MINIMUM 17.5' VERTICAL CLEARANCE 1 1 GROUND LINE REVISIONS MARLIN ENGINEERING, INC. 17 NW Ave., Ste. 1 Plantation, FL (35) C.A. No. 1 STATE OF FLORIDA DEPARTMENT OF TRANSPORTATION ROAD NO. COUNTY FINANCIAL PROJECT ID SR-5 MIAMI-DADE ROADWAY PLAN & PROFILE BIRD ROAD OVERPASS SHEET NO. 3 rlagos //17 3:53:7 PM K:\155.1 NonMotorizedPedBikeUS1\153313\roadway\PLAN\PLANRD3.dgn

10 True North N 1 Feet ,.1 1.' CLEAR METRORAIL TRACK METRORAIL TRACK END S BEGIN S +.3 S N Direction of Travel MetroRail UNDERLINE 1+3. PEDESTRIAN OVERPASS END PEDESTRIAN OVERPASS END SR-5/S. DIXIE HIGHWAY PEDESTRIAN/BICYCLE RAILING END BEGIN PI +.3, EL. 5. END PEDESTRIAN OVERPASS END PI +3.97, EL.. (-) 3.% (-) 3.% GROUND LINE REVISIONS MARLIN ENGINEERING, INC. 17 NW Ave., Ste. 1 Plantation, FL (35) C.A. No. 1 STATE OF FLORIDA DEPARTMENT OF TRANSPORTATION ROAD NO. COUNTY FINANCIAL PROJECT ID SR-5 MIAMI-DADE ROADWAY PLAN & PROFILE BIRD ROAD OVERPASS SHEET NO. rlagos //17 3:53:9 PM K:\155.1 NonMotorizedPedBikeUS1\153313\roadway\PLAN\PLANRD.dgn

11 SW th. STREET (BIRD RD.) 3'-1 1/" 1 3/" CONCRETE DECK BOTTOM CHORD BRACE DIAGONAL WESTBOUND TRAIN EASTBOUND TRAIN 5'-" TYPE 3 SUNSHINE INFILL PANEL STL. PED/BICYCLE FLOOR BEAM SIDE DAM RAILING - TYPE 3 SUNSHINE INFILL PANEL PER INDEX 5 DECK BRACING PEDESTRIAN OVERPASS PLAN FRAMING DETAIL 1 VARIES SYSTEM SECTION 1 TOP CORD CONCRETE ABUTMENT VERTICAL DIAGONAL PEDESTRIAN OVERPASS ELEVATION BOTTOM CHORD WESTBOUND TRAIN EASTBOUND TRAIN 5'-" 1.' CLEAR 1.' CLEAR 5'-" VARIES 1.' 17'-" MIN. SW th. STREET (BIRD RD.) SECTION EOP ALONG WESTBOUND TRAIN EASTBOUND TRAIN SR5 / US 1 / S. DIXIE HWY 17'-" MIN. GUARDRAIL US-1 (S. DIXIE HIGHWAY) SECTION 3 REVISIONS MARLIN ENGINEERING, INC. 17 NW Ave., Ste. 1 Plantation, FL (35) C.A. No. 1 STATE OF FLORIDA DEPARTMENT OF TRANSPORTATION ROAD NO. COUNTY FINANCIAL PROJECT ID SR-5 MIAMI-DADE TYPICAL SECTION DETAILS SHEET NO. 5 rdominguez 3//17 ::55 PM K:\155.1 NonMotorizedPedBikeUS1\153313\roadway\PLAN\TYPSRD1.DGN