Pavement_Report_Addendum.pdf

Page 1 of 2 Pages

Form FHWA-201 (Rev. 11-67)

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

Use this form in lieu of transmittal slips within Dept. of Trans. When message comment is to be retained as file material. Do not prepare carbons. Not to be used in lieu of Form FHWA- 121 for informal correspondence. MINUTE-MEMO

\\fhfl15fileserve.flhd.fhwa.dot.gov\Data\PROJECTS\_FWS\IRRI\10(1)\Techserv\Pavement\Correspondence\IRRI 10(1) Pavement Report Addendum_ME_knb.doc

SUBJECT: Addendum - Pavement Recommendations for Project FWS IRRI 10(1)

TO MESSAGE/COMMENT FROM/DATE

R. Kotadia Project Manager

And:

C. Burnell Highway Design Manager

This addendum to the pavement report FY-19-01 for FWS IRRI 10(1), Iron River National Fish Hatchery, provides additional recommendations based on revised design information, and should be used in conjunction with the project Pavement Report.

Main and Lower Level Entrance Roads (Routes 10AZ & BZ) The revised rehabilitation pavement section omits the initial tack coat application in accordance with the table below. Table 1 will replace Table 7 in the report.

Table 1. IRRI Road Rehabilitation – SAMI & Asphalt Overlay

Layer Minimum Thickness

(in)

Comments

Asphalt Surface Course

Asphalt Concrete Pavement – Gyratory Method (GACP), 0.3 to 3 x 106 ESAL’s, PG 58-34, ½” Nominal

Maximum Size Aggregate (NMSA), Type IV roughness

Asphalt Tack Coat

AC Tack Coat as per Section 412 of the

FP-14 Specifications

Chip Seal 1B --- Single Course Chip Seal Type 1B, per

Section 407 of the FP-14 Specifications, Table 407-2

Main and Lower Level Hatchery Parking Lots (Routes-900AZ & BZ) Portions of the parking areas may be milled prior to the asphalt overlay placement. Recommended crack sealing and filling is not necessary in milled areas. In addition, spot repair, or patching can be performed after milling operations in accordance with the table below. Table 2 will replace Table 4 in the report.

Table 2. Full Depth Asphalt Patch, Type 1

Layer Minimum Thickness

Asphalt Intermediate

Asphalt Concrete Type II, 0.3 to 3 x 106 ESAL’s, ½” NMSA per Section

403 of the FP-14 Specifications

Aggregate Base Course

Base Aggregate, Grading C or D, as per Section 301 of the FP-14 Specifications

Geotextile --- Separation and Stabilization

Geotextile Class 2 – Type E, per Section 207 of FP-14 Specifications

Asphalt wedge and level course will be required in parking areas to achieve

K. Ngozi- Bullock Pavement Engineer

Through:

M. Elias Pavement Team Leader

3/13/2018

Page 2 of 2 Pages

Form FHWA-201 (Rev. 11-67)

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

Use this form in lieu of transmittal slips within Dept. of Trans. When message comment is to be retained as file material. Do not prepare carbons. Not to be used in lieu of Form FHWA- 121 for informal correspondence. MINUTE-MEMO

\\fhfl15fileserve.flhd.fhwa.dot.gov\Data\PROJECTS\_FWS\IRRI\10(1)\Techserv\Pavement\Correspondence\IRRI 10(1) Pavement Report Addendum_ME_knb.doc

TO MESSAGE/COMMENT FROM/DATE

final grades. Wedge and level course should be placed in maximum 3-inch lifts using the same asphalt concrete used for full depth asphalt, type 1 patching.

Fish Loading and Parking Lot (Route-800) Route 800 will be reconstructed as an asphalt paved loading dock, parking and drive. The new pavement section should be constructed in accordance with the table below, also shown as Table 8 in the report.

Table 3. New Construction

Layer Minimum Thickness

Asphalt Surface

Asphalt Concrete Pavement – Gyratory Method (GACP), 0.3 to 3 x 106 ESAL’s, PG 58-34, ½” NMSA, Type IV roughness

Asphalt Tack Coat -- AC Tack Coat as per Section 412 of the FP-14 Specifications

Asphalt Base Course 2 GACP, 0.3 to 3 x 106 ESAL’s, ½”

NMSA

Aggregate Base Course

Base Aggregate, Grading C or D, as per Section 301 of the FP-14 Specifications

Geotextile --- Separation and Stabilization

Geotextile Class 2 – Type E, per Section 207 of FP-14 Specifications

A polymer modified (PG 58-34) asphalt binder is recommended to minimize future thermal cracking.