WHAT IS A MECHANICALLY STABILIZED EARTH WALL (MSE)?
As shown in the photos below, an MSE wall, is being constructed to support the westbound roadway as it transitions from the MacArthur Causeway to the elevated I-395 Signature Bridge. As westbound traffic approaches the Signature Bridge, the roadway transitions from a roadway supported on the ground to the elevated bridge structure supported by the arches and stay cables. The MSE wall helps make that transition by creating a strong, reinforced embankment that gradually raises the roadway to the bridge.
The wall is constructed using concrete panels on the outside and layers of fill behind them. Reinforcing straps are attached to the concrete panels and extend back into the fill. As additional layers of fill and reinforcing straps are installed, they work together to strengthen and stabilize the embankment. Once completed, the MSE wall will support the westbound roadway as it transitions from the MacArthur Causeway onto the I-395 Signature Bridge.
the I-395 Signature Bridge.
EXTENDED FULL CLOSURE OF EASTBOUND S.R. 836 AT NW 17 AVENUE AND TEMPORARY CHANGE OF DRAWBRIDGE OPERATION SCHEDULE
- Friday, October 2 through Saturday, October 3 – All eastbound S.R. 836 travel lanes will be closed at NW 17 Avenue starting at 10 p.m. on Friday, October 2, until 10 a.m. on Saturday, October 3, to place the reinforcing steel cage for a bridge support structure over the roadway safely. The detours noted below and shown HERE will be in place to guide drivers around the work area. Drivers on eastbound S.R. 836 will:
- Exit at NW 17 Avenue, then continue south across NW 7 Street
- Turn left at SW 1 Street and continue east
- Turn right at South Miami Avenue
- Turn right to access the ramp to I-95 north or south
- Drivers going to Biscayne Boulevard and the MacArthur Causeway can continue east on SW 1 Street and turn left on Biscayne Boulevard to connect with the MacArthur Causeway entrance ramp at NE 11 Terrace
Drivers on NW 12 Avenue wanting to access eastbound S.R. 836, I-95, Biscayne Boulevard, and the MacArthur Causeway can continue south on NW 12 Avenue, turn left at SW 1 Street, and follow the detours above.
FULL CLOSURE OF WESTBOUND S.R. 836
- All westbound lanes on S.R. 836 will be closed from NW 12 Avenue to NW 17 Avenue starting at 11 p.m. on Friday, October 2 until 8 a.m. on Saturday, October 3. Two lanes will be closed at 10 p.m. Drivers can:
- Exit at the NW 12 Avenue ramp, then turn left on NW 12 Avenue
- Turn right on NW 7 Street
- Turn right on NW 17 Avenue and continue north to connect with the westbound S.R. 836 ramp
To view a map of the detour, please click here.
S.R. 968/WEST FLAGLER STREET AND SW 1 STREET BRIDGES NOTICE OF TEMPORARY CHANGE TO THE DRAWBRIDGE OPERATING SCHEDULE
The Florida Department of Transportation is authorized to temporarily deviate from drawbridge operation regulation 33 CFR 117.305(b) that governs the SW 1 Street Bridge, mile 0.9, and the West Flagler Street Bridge, mile 1.0, across the Miami River.
Under this temporary deviation, the SW 1 Street and the West Flagler Street Bridges are allowed to operate as follows:
- On Saturday, October 3, from 6 a.m. to 10 a.m., the bridges will open on the hour and half-hour.
At all other times, the bridges will operate per their normal operating regulation. Public vessels of the United States, tugs and tugs with tow, and vessels in distress shall be passed at any time. This authorization is in support of the S.R. 836 highway closure. The U.S. Coast Guard will announce the temporary change to the bridge operating regulations in the Local Notice to Mariners and via a Broadcast Notice to Mariners.
I-95 ONGOING CONSTRUCTION ACTIVITIES
- All new concrete pavement has been completed from NE 17 Street to NW 29 Street, as well as along northbound I-95 from NW 8 Street to NW 17 Street.
- To date, approximately 138 million pounds of concrete have been used to replace the existing pavement, enhancing safety and increasing the long-term durability of this heavily traveled corridor.
- Continued concrete pavement replacement along remaining sections of southbound I-95 between NW 17 Street and NW 8 Street
- Installation of Intelligent Transportation System (ITS) devices along the corridor
- Traffic railing retrofits on several bridges within the project limits
I-95 LANE CLOSURES
- Wednesday, September 30 through Friday, October 2 and Sunday, October 4 through Friday, October 9 – Up to two lanes on southbound I-95 from NW 29 Street to NW 8 Street will be closed as needed between 9 p.m. and 5:30 a.m. The Friday closures will be implemented between 11 p.m. and 8 a.m.
- Wednesday, September 30 through Friday, October 2 and Sunday, October 4 through Friday, October 9 – Up to two lanes on northbound I-95 will be closed as needed from NW 8 Street to NW 29 Street between 9 p.m. and 5:30 a.m. The Friday closures will be implemented between 11 p.m. and 8 a.m.
SOUTHBOUND I-95 RAMP TO WESTBOUND S.R. 836 DETOUR
- Wednesday, September 30 and Thursday, October 1 – The southbound I-95 ramp to westbound S.R. 836 will be closed between the hours of 9 p.m. and 5:30 a.m. Drivers can:
- Continue south on I-95
- Exit at SW 7 Street/Brickell Avenue (Exit 1B), then turn left at SW 8 Street
- Enter the northbound I-95 ramp, then access the ramp to westbound S.R. 836
To view a map of the detour, please click here.
I-395 ONGOING CONSTRUCTION ACTIVITIES
Signature Bridge
- Advancing construction of the first of three cast-in-place starter arch elements for each of the two remaining signature bridge arches
- Construction of MSE walls that will connect the westbound signature bridge roadway deck to the MacArthur Causeway
- Falsework installation adjacent to Biscayne Boulevard
- Ongoing drainage improvements throughout the corridor
- Continued installation of reinforcing steel, falsework and formwork, along with concrete pours for the westbound signature bridge roadway deck spanning NE 2 Avenue and Biscayne Boulevard
I-395 Segmental Bridges Connecting the Signature Bridge to I-95 and S.R. 836
- Daytime and nighttime installation of precast roadway segments, along with construction of concrete caps and columns from NW 1 Place to the Midtown Interchange
- Construction of substructure elements for the new pedestrian bridge over the FEC rail tracks
- Ongoing roadway improvements along I-395 from the MacArthur Causeway to I-95
- Installation of bridge beams between NW 3 Avenue and the Midtown Interchange for the new I-395 connection to S.R. 836
- Continued roadway and bridge work in preparation for the upcoming opening of the new westbound I-395 ramp to southbound I-95
- Ongoing roadway work to open a second lane on the southbound I-95 ramp to eastbound I-395
NOTE: Nearby residents and businesses may experience periods of higher-than-normal noise levels during these activities. All efforts are being made to minimize noise levels to the fullest extent possible
I-395 MAINLINE LANE CLOSURES
- Wednesday, September 30 through Friday, October 2 and Sunday, October 4 through Friday, October 9 – One lane on mainline eastbound I-395 will be closed as needed from I-95 to Biscayne Boulevard between 10 p.m. and 5:30 a.m.
- Wednesday, September 30 through Friday, October 2 and Sunday, October 4 through Friday, October 9 – Up to two lanes on mainline westbound I-395 will be closed as needed from Biscayne Boulevard to I-95 between 10 p.m. and 5:30 a.m.
FULL CLOSURE OF BISCAYNE BOULEVARD, NE 13 STREET AND SOUTHBOUND NORTH BAYSHORE DRIVE
- Wednesday, September 30 through Friday, October 2 and Sunday, October 4 through Friday, October 9 – The following closures will be implemented between 10 p.m. and 6 a.m. for drainage and roadway work. Daytime lane closures will also be necessary at times. The start and end times will be adjusted on special event days.
- All northbound and southbound lanes on Biscayne Boulevard from NE 14 Street to NE 11 Terrace
- All lanes on NE 13 Street from N Bayshore Drive to NE 2 Avenue
- All southbound lanes on North Bayshore Drive from NE 14 Street to NE 13 Street
To view a map of the detour, please click here.
DAYTIME FULL CLOSURE OF NW 14 STREET
- Through Friday, October 30 – NW 14 Street from NW 3 Avenue to NW 1 Place will be closed Monday through Saturday, between 8:30 a.m. and 4 p.m., to erect precast roadway segments. Drivers and pedestrians can use the detours shown here.
- Drivers on eastbound NW 14 Street can:
- Turn right on NW 3 Avenue, then turn left on NW 13 Street
- Turn left on NW 1 Place to connect with NW 14 Street
- Drivers on westbound NW 14 Street can:
- Turn right on NW 1 Place, then turn left on NW 16 Street
- Turn left on NW 2 Avenue to continue onto NW 16 Street
- Turn left on NW 3 Avenue to connect with NW 14 Street
- Drivers on eastbound NW 14 Street can:
DAYTIME LANE CLOSURES ON BISCAYNE BOULEVARD
- Wednesday, September 30 through Friday, October 2 and Sunday, October 4 through Friday, October 9 – Single lane closures on northbound and southbound Biscayne Boulevard will be implemented as needed from NE 11 Street to NE 14 Street between 9 a.m. and 3:30 p.m.
NW 1 PLACE DETOUR
- Tuesday, October 6 through Friday, October 9 – NW 1 Place will be closed from NW 13 Street to NW 14 Street between 9 a.m. and 4 p.m. to move a crane across the roadway. Drivers can use NW 2 Avenue as an alternate route.
NW 2 AVENUE DETOUR
- Wednesday, September 30 through Friday, October 2 and Sunday, October 4 through Friday, October 9 – NW 2 Avenue will be closed from NW 13 Street to NW 14 Street between the hours of 10 p.m. and 5:30 a.m. The closure is necessary to allow the contractor to move a crane across the roadway. Drivers should follow the posted detour routes.
NW MIAMI COURT DETOUR
- Wednesday, September 30 through Friday, October 2 and Sunday, October 4 through Friday, October 9 – NW Miami Court will be closed from NW 14 Street to NW 13 Street between 8 a.m. and 4 p.m. The closure is necessary to allow the contractor to perform drainage operations. Drivers should follow the posted detour routes.
S.R. 836 ONGOING CONSTRUCTION ACTIVITIES
- Nighttime installation of precast bridge pier cap segments and beams for the new S.R. 836 double-decked roadway, from over the Miami River to the Health District area
- Preparations to reconstruct the entire fendering system in the Miami River
- Tying reinforcing steel for the straddle bent support structure over eastbound S.R. 836, just west of NW 7 Avenue
- Installation and removal of steel sheet piling in the S.R. 836 median between NW 12 Avenue and I-95 to support ongoing construction
- Continued foundation construction in the S.R. 836 median and along adjacent roadways from NW 12 Avenue to I-95 for the new double-decked roadway
- Construction of support piers for the double-decked roadway within the Midtown Interchange
- Installation of stay-in-place forms and reinforcing steel in preparation for concrete deck pours for the new double-decked roadway
NOTE: Nearby residents and businesses may experience periods of higher-than-normal noise levels during these activities. All efforts are being made to minimize noise levels to the fullest extent possible.
S.R. 836 LANE CLOSURES
- Wednesday, September 30 through Friday, October 2 and Sunday, October 4 through Friday, October 9 – Two eastbound lanes on S.R. 836 from NW 17 Avenue to I-95 will be closed as needed for bridge work between 9 p.m. and 5:30 a.m. The Friday closures will be implemented between 11 p.m. and 8 a.m.
- Wednesday, September 30 through Friday, October 2 and Sunday, October 4 through Friday, October 9 – Two westbound lanes on S.R. 836 from I-95 to NW 17 Avenue will be closed as needed for bridge work between 9 p.m. and 5:30 a.m. The Friday closures will be implemented between 11 p.m. and 8 a.m.
WEEKEND DAYTIME S.R. 836 LANE CLOSURES
- Saturday, October 3 and Sunday, October 4 – One westbound left lane on I-395/S.R. 836 from east of I-95 to east of NW 12 Avenue and one eastbound left lane from NW 12 Avenue to I-95 will be closed for bridge foundation work between 8 a.m. and 4 p.m.
COMPLETE CLOSURE OF EASTBOUND S.R. 836 AT NW 17 AVENUE
- Wednesday, September 30, Thursday, October 1 and Sunday, October 4 through Friday, October 9 – All eastbound S.R. 836 travel lanes will be closed at NW 17 Avenue between 10 p.m. and 5:30 a.m. The start and end times will be adjusted on special event days.
The detours noted below and shown here will be in place to guide drivers around the work area. Drivers on eastbound S.R. 836 will:- Exit at NW 17 Avenue, then continue south across NW 7 Street
- Turn left at SW 1 Street and continue east
- Turn right at South Miami Avenue
- Turn right to access the ramp to I-95 north or south
- Drivers going to Biscayne Boulevard and the MacArthur Causeway can continue east on SW 1 Street and turn left on Biscayne Boulevard to connect with the MacArthur Causeway entrance ramp at NE 11 Terrace
Drivers on NW 12 Avenue wanting to access eastbound S.R. 836, I-95, Biscayne Boulevard, and the MacArthur Causeway can continue south on NW 12 Avenue, turn left at SW 1 Street, and follow the detours above.
FULL CLOSURE OF WESTBOUND S.R. 836
- Wednesday, September 30, Thursday, October 1 and Sunday, October 4 through Friday, October 9 – All westbound lanes on S.R. 836 will be closed as needed from NW 12 Avenue to NW 17 Avenue between 10 p.m. and 5:30 a.m. The closure on Friday will occur between 11 p.m. and 8 a.m. The start and end times will be adjusted on special event days. Drivers can:
- Exit at the NW 12 Avenue ramp, then turn left on NW 12 Avenue
- Turn right on NW 7 Street
- Turn right on NW 27 Avenue and continue north to connect with the westbound S.R. 836 ramp
To view a map of the detour, please click here.
