QA_03-04-22.pdf

WA NPS PP NOCA 2020(1)

Pavement Preservation North Cascades

# General Technical Question Answer Date

X Route 0101 Between MP 3 and 4 has a complete road washout that is inaccessible. Can you please provide information on when this will be repaired or will the segments after the washout be deleted? Please confirm it will not be the contractors responsibility to repair the road/bridge to obtain access?

The National Park Service is not aware of this inaccessible road washout. The Contractor will be responsible for the contract requirements, so please bid the solicitation documents.

24-Feb-22

X Can you forward me the as-built of the Nehalem creek access bridge? Will be addressed under Amendment A001 1-Mar-22

X Can you forward me the geotechnical information regarding the pavement depth at the

North abutment of the bridge The Government will address the Geotechnical information under Amendment A001, but no subsurface data was collected. Pavement depth is unknown

1-Mar-22

X Route 0101 Between MP 3 and 4 has a complete road washout that is inaccessible. Can you please provide information on when this will be repaired or will the segments after the washout be deleted? Please confirm it will not be the contractors responsibility to repair the road/bridge to obtain access?

Additional inquiry to question 1 above: Please see attached pictures of Route 0101 as described below. This is an extensive project just to allow access for pickup trucks, yet alone slurry trucks.

The Government anticipates Route 0101 between MP 3 and 4 will be accessible for the work prescribed under this solicitation by the date indicated in SCR 108.01(j), that was added under Amendment A001. Please submit bids according to the solicitation documents. Will be addressed under Amendment A001.

2-Mar-22

X •Regarding item A0100 MSE Wall:

a)Can FHWA provide a geotechnical report?

b)Can FHWA provide as-built drawings of Nehalem Creek Bridge construc on?

a) & b): Will be addressed under Amendment A001 1-Mar-22

X •Since Nehalem Creek Bridge is a can lever style bridge (see a achment):

a)How does the contractor support the weight of the bridge?

b)How does the new soil material compact under the bridge (highlighted in purple)?

c)What keeps the soil from eroding when water comes into contact with the newly constructed MSE wall?

a) A cantilever bridge is a rigid structural element that extends horizontally and is supported at only one end. It doesn’t need support to perform work in contract.

b)Compact material in accordance with SCR 255.05.

c)Select Granular Backfill material is retained by Mechanically Stabilized Earth Wall, Welded Wire Face, which includes hardware cloth and standard underdrain system (see details in plans). Please bid accordingly

1-Mar-22

X Is there a weight restriction on the bridge going into route 202 Nehalem creek campground access rd.

Bridge is owned by National Park Service and is open to legal loads, submit any overload requests (loads over 80,000 lbs.) per 104.05. Please bid accordingly

1-Mar-22

X Is there a weight restriction on diablo dam rd., specifically over the dam? Dam Bridges are owned by Seattle City Light, submit any overload requests per 104.05. Please bid accordingly 1-Mar-22

X Is there weight restrictions on the concrete bridges(culverts) on route 101 Cascade River Rd?

Two bridges within the National Park Boundary are owned by NPS and are open to legal loads, submit any overload requests (loads over 80,000 lbs.) per

104.05. Other bridges on the route are owned by other agencies (County), overload permits would need to be obtained from the owner agency. Submit any overload requests per 104.05. Please bid accordingly

1-Mar-22

Check General or Technical

X Will narrow routes similar to route 101 Cascade River Road be allowed to be closed during microsurfacing placement?

please review SCRs, 105.04, 107.10, 108.01 and 156.04. please bid accordingly

1-Mar-22

X Will Newhalem Creek Campground closure dates be flexible? No. Please bid accordingly 1-Mar-22

X Will a third-party quality control manager be required? No, please see SCR 153 for Contractor Quality Control Manager qualifications and other requirements. please bid accordingly 1-Mar-22

X FP-14 Sect 409.10 states “do not roll mainline roadway” SCR 409.10 does not specify areas to roll. Will routes 0101-435B be required to roll FP-14 section 409.10 has been deleted in its entirety through SCR 409.10.

SCR 409.10 states to roll all areas. Please bid accordingly.

1-Mar-22

X Does the bridge rest on wall? If yes, what is the bridge load and bearing area at wall? Does a grade beam need to be included?

No, Skagit River Bridge (No. 9470-015P) is a cantilever concrete box girder bridge. The bridge loading doesn’t rest on the wall. No, grade beam isn’t needed. Please bid accordingly

1-Mar-22

X What are the soil parameters for the site: Bearing capacity, Internal friction, density? the Government is currently assessing this question and will provide an answer as soon as possible the Government did not completed any testing of soils and this information is unavailable from the Government. Please refer to FP-14 Section 257 Contractor-Designed Retaining Walls and Special Contract Requirements (SCR’s) Section 257 Contractor-Designed Retaining Walls concerning designer/supplier requirements. Please bid accordingly.

4-Mar-22

X Has global stability analysis been done and where can those results be found? the Government is currently assessing this question and will provide an answer as soon as possible. Global Stability analysis has not been completed by the Government. Please refer to FP-14 Section 257 Contractor-Designed Retaining Walls and Special Contract Requirements (SCR’s) Section 257 Contractor-Designed Retaining Walls concerning designer/supplier requirements. Please bid accordingly.

4-Mar-22

X Good afternoon, I'd like to confirm that the "RG1412" sheets are the same as the as-builts provided in the "North abutment settlement mitigation" document?

File RG1412.pdf are the original design plans prior to construction. The As-builts provided in the “north Abutment Settlement Mitigation” document are the as-built plans showing changes (if any) from the original design after construction.

2-Mar-22