7/16/19
LEWALLEN BRIDGE REPLACEMENT PROJECT UPDATE
Lynn Murphy (Project Coordinator)

7/16/19 - At month 11 of the 36 month project:

Underground utility relocation: The existing natural gas, sanitary sewer, and water lines that created a conflict with proposed structures have now been replaced and relocated, and the underground utility phase is complete. This has allowed construction on the remaining five columns for piers # 1, # 2, and # 3 to begin.(see photos).

Traffic plan: The northbound lane closure on Clinch Avenue near Carden Farm Drive continues. Crews are working to complete Abutment # 2 within ten days, in hopes of re-opening the lane for upcoming school traffic (see details below).

Abutment # 1 construction: Abutment # 1 (north end) construction is underway. Approximately one hundred steel beam pilings (twenty-five feet long) are required to be driven, and installation will begin soon.
Abutment # 2 construction: Work on Abutment # 2 (south end) continues. A steel reinforced concrete foundation has been poured, containing steel beam pilings, installed to stabilize the footing. Additional concrete work to create the wing walls is currently underway (see photos).
Pier # 3 construction: The photos of column # 3 (of 3) for Pier # 3 show a typical footing and foundation for a six feet diameter pier column. Notice that the footing contains thirty steel beam pilings that were driven twenty-five feet deep. The concrete forms shown measure fifteen feet wide by eighteen feet long. (Recall that eight bridge structures are being built, consisting of two abutments and six piers, numbered north to south).

Note: The TDOT Lewallen Bridge Replacement Project began on Monday September 17, 2018 and is scheduled for completion on August 31, 2021
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9/24/18 - Week 1 of the 156 week project resulted in:
- Riverside Drive has been closed at South Charles G. Seivers Blvd. and at Meadowbrook Street.
- In order to better manage traffic affected by the road closure and detour, we have upgraded the traffic signal at S. Charles G. Seivers Blvd. at the Willow/Sunset intersection (at McDonald’s). It now has a protected left turn arrow in each direction, and pavement markings have been refreshed.
- The Lakefront Park Walking Trail has been closed on each end of the work zone. Along the river inlet, the metal fence and the trail lighting fixtures and poles are being removed and stored, to protect them from damage. They will be replaced when the trail re-opens.
- The TDOT contractor, Blalock Construction, began clearing and grubbing the right-of-way property on the south end of the Lewallen Bridge. The trees and brush that have been removed will be ground into mulch and spread as an erosion control blanket.
- Preliminary work for underground utility relocation is underway. A sanitary sewer line and a natural gas line are being moved to a new route, away from the work zone and beneath the existing bridge.
- Bridge and pier construction will begin on the south end of the project and proceed toward the north.

10/19/18 - After month 2 of the 36 month project:
- Traffic disrupted by the Lewallen Bridge project continues to adjust to the detours. The recent traffic signal improvements providing for left turns at Willow Street and Sunset Road appear to be very helpful to local residents.
- The TDOT contractor, Blalock Construction, continues to clear the right-of-way property on the south end of the Lewallen Bridge. Most of the trees and brush have been removed and ground into mulch, which is currently being spread across the disturbed areas as an erosion control blanket. Excavation for the first bridge pier footing is underway.
- Blalock crews are currently working at the boat launch ramp area, building two large floating work platforms. Single barge sections are hauled in by tractor-trailer truck, with the individual sections being unloaded by crane and placed into the river, where they are bolted together to form a barge. Barges will be used as a platform for workers, and to support a large crane.

11/20/18 - After month 3 of the 36 month project:
- TDOT contractor Blalock Construction continues work on the Lewallen Bridge replacement project.
- The new bridge will consist of an abutment on each end and six piers between them. Piers are numbered from north to south. Piers 4 and 5 are in the water.
- Pier 6 (the farthest south) is currently being built (see photos). One photo shows the foundation pilings (steel beams) being driven down 20-30 feet until they reach bedrock. The vertical beams shown are all contained in a single column, with the foundation for pier 6 consisting of 3 columns. A more recent photo shows the 3 rebar reinforced concrete columns sitting on top of the foundation pilings.
- Within the next few weeks, one north bound lane of Clinch Avenue will be closed, beginning at Carden Farm Drive. The slow lane will be shut down while the south abutment is prepared. The lane will re-open at mid-span of the Lewallen Bridge. Expect traffic congestion during peak hours.

12/10/18 - After month 4 of the 36 month project:
- TDOT contractor Blalock Construction continues building pier # 6 on the Lewallen Bridge replacement project.
- The attached photo shows three steel reinforced concrete columns and a foundation. Crews are building the cap that sits on top of the columns, which will support the deck. The wooden material shown in the photograph is a temporary walkway built across the structural steel.
- A sanitary sewer pipe relocation project will begin soon, beneath the existing bridge. CUB Water and Sewer will be inspecting the installation.
-The work zone speed limit on the north bound side of Clinch Avenue has been reduced from 45 mph to 35 mph, beginning at Lynncrest Street (near the Git ‘n Go Market). Speed limit signs and advance speed limit signs have been installed. The south bound speed limit continues to be 35 mph across the bridge, but it has been extended south to the Hiway Drive traffic signal.
- The north bound Clinch Avenue lane closure previously mentioned will not take place until after January 1, 2019.

1/22/19 - After month 5 of the 36 month project:
- Blasting on the south end of the project was completed on 01-10-19. No further blasting is anticipated.
- The concrete cap on Pier # 6 has been poured. Work on abutment # 2 (the farthest structure south) should begin within the next two months. This will require a north bound lane closure on Clinch Avenue.
- The sanitary sewer pipe relocation project is about 50% complete. Once it is finished, work will begin on a natural gas line relocation project.
- Piers #4 and #5 are under construction (a total of 6 piers and 2 abutments are required, numbered north to south). Piers #4 and #5 will rest on twin columns in the water. Drilling is currently in progress for these, and the first concrete pour for a column on Pier #5 is scheduled this week. It takes about one week to drill each column hole, build the rebar steel cage insert, and pour the concrete. There is minimal silt and mud on the river floor. A large diameter steel casing will sit on a shoulder 2.5 feet into the bedrock. A drill bit turns inside the steel casing to create a 9 feet wide by 25 feet deep hole into the solid bedrock, which will receive the steel rebar cage and poured concrete, to create the column.
- There has been a recent increase in curious onlookers attempting to enter the work zone on Riverside Drive, both walking and driving. The section of Riverside Drive and the adjoining sidewalks are closed to the public until the project is finished, and no entry from either direction is allowed beyond the barricades and Road Closed signs. The work zone is a very hazardous area and may not be visited by unauthorized individuals. Everyone’s cooperation in the keeping the work zone clear and safe is appreciated.

2/15/19 - After month 6 of the 36 month project:
- Construction continues on six underwater support columns drilled twenty-five feet deep within the bedrock.
- Recall that Piers # 5 and # 4 are located in the river, requiring two columns each. Both underwater columns for Pier # 5 have been poured. One column for Pier # 4 has been poured, and the second is currently being drilled.
- Piers # 3 and # 2 each require one underwater column. These will be located in the river inlet near the concrete walking trail.
- The sanitary sewer line relocation project continues. Delays were recently encountered when a natural gas line was excavated that conflicted with the required sewer line route. Powell-Clinch Utility worked with the bridge contractor for over one week performing the necessary work.

3/21/19 - At month 7 of the 36 month project:
- Drilling for six underwater shafts for bridge pier columns has been completed. Steel reinforced concrete has been poured at each shaft, and the columns must now be tested to ensure that they meet TDOT specifications and that no voids exist.
- Once testing is complete, crews will begin construction to extend the columns upward by building forms and connecting steel reinforcement. Other bridge pier column construction on dry land may now proceed, as well.
- The sanitary sewer line re-location project continues, and is awaiting connection at each end of the job. The water line and natural gas line re-location projects should begin within the next 60 days.

4/17/19 - After month 8 of the 36 month project:
- Crews are building the footings and foundation for Pier # 1 (recall that the bridge consists of 6 piers and 2 abutments, number from north to south). One of the columns for Pier # 1 is located in the parking lot adjacent to Riverside Drive.
- Pier # 1 includes three -6- feet diameter columns of steel reinforced concrete. Columns sit on individual footings. Each footing has forty-two steel beams (pilings spaced 3 feet apart) driven downward until they reach bedrock. Once the three footings are built and the columns are constructed, a steel reinforced concrete cap is built across the top of the three columns. The cap will support nine steel girder beams.
- Pier # 1 is built entirely on dry land. Piers # 2 and 3 each include one underwater column, located in the river inlet beside the concrete walking trail.
- Piers # 4 and 5 sit entirely in the river, just upstream from the two piers that support the existing bridge. Piers # 4 and 5 are each supported by twin underwater support columns. The underwater sections of the new columns are complete and will be connected to and then extended upward.
- Pier # 6, the farthest pier at the south end of the job, is complete and may be viewed for comparison. It is similar in appearance to Pier # 1.

5/20/19 - At month 9 of the 36 month project:
Underground utility relocation:
The sanitary sewer pipe relocation job is complete. Crews are currently working on a natural gas pipe and a water line installation. These should both be completed within 30 days.
Here is the current status of the eight bridge supporting structures:
Abutment # 1 - to begin after u/g utility relocation is complete.
Pier # 1 - one of three columns is under construction (see photos) with the other columns awaiting u/g utility relocation.
Pier # 2 - one of three columns is under construction (underwater) with the other columns awaiting u/g utility relocation.
Pier # 3 - two of three columns are under construction with the third column awaiting u/g utility relocation.
Pier # 4 - two of two underwater column foundations are in place with steel reinforcement being erected to extend upward (see photos).
Pier # 5 - two of two underwater column foundations are in place with steel reinforcement being erected to extend upward.
Pier # 6 - three columns and the cap across them are complete.
Abutment # 2 - should begin within 30-60 days. This one will require the lane closure for one northbound Clinch Avenue traffic lane.

6/17/19 - At month 10 of the 36 month project: 
Underground utility relocation: 
1. The sanitary sewer line and the natural gas line projects are complete. Crews are currently working on finishing the water line portion of the utility relocation (see photo). Once it is complete, construction on the remaining columns for piers # 1, # 2, and # 3 may proceed. 
Traffic Plan: 
1. On Clinch Avenue near Carden Farm Drive, one north bound lane has been closed while work begins on abutment # 2 (see photos). This lane should re-open prior to 2019 fall season school traffic beginning. 
2. On Clinch Avenue near South Seivers Blvd., a portion of the north bound right turn lane storage area has been closed and the other lanes reconfigured (see photo). This change is necessary so work on abutment # 1 may begin. The lane shift will remain in place throughout the remainder of the project.
Abutment # 2 construction:
1. Abutment # 2 construction excavation is underway to prepare a footing (see photo). Twenty-seven steel beam pilings will be driven approximately thirty feet deep (until they reach bedrock) to support the abutment.

7/16/19 - At month 11 of the 36 month project:
Underground utility relocation:
The existing natural gas, sanitary sewer, and water lines that created a conflict with proposed structures have now been replaced and relocated, and the underground utility phase is complete. This has allowed construction on the remaining five columns for piers # 1, # 2, and # 3 to begin (see photos).
Traffic plan:
The northbound lane closure on Clinch Avenue near Carden Farm Drive continues. Crews are working to complete Abutment # 2 within ten days, in hopes of re-opening the lane for upcoming school traffic (see details below).
Abutment # 1 construction:
Abutment # 1 (north end) construction is underway. Approximately one hundred steel beam pilings (twenty-five feet long) are required to be driven, and installation will begin soon.
Abutment # 2 construction:
Work on Abutment # 2 (south end) continues. A steel reinforced concrete foundation has been poured, containing steel beam pilings, installed to stabilize the footing. Additional concrete work to create the wing walls is currently underway (see photos).
Pier # 3 construction:
The attached photos of column # 3 (of 3) for Pier # 3 show a typical footing and foundation for a six feet diameter pier column. Notice that the footing contains thirty steel beam pilings that were driven twenty-five feet deep. The
concrete forms shown measure fifteen feet wide by eighteen feet long. (Recall that eight bridge structures are being built, consisting of two abutments and six piers, numbered north to south).
CLICK HERE TO SEE A PHOTO GALLERY OF PICTURES FROM THE BRIDGE PROJECT