or-ef-umpqu615-2022-2-1_3220-1.42_proposed-vertical-alignment.pdf
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This document is a Vertical Alignment Review Report for the Umpqua ERFO Repairs 2022 project (Site 3220-1.42) prepared by the Federal Highway Administration's Western Federal Lands Highway Division. The report details technical specifications for road alignment, including precise elevation measurements and grade calculations across multiple linear and parabolic elements. The vertical alignment starts at station 300+00.00 with an elevation of 2392.709 feet and concludes at station 302+30.37 with a final elevation of 2399.486 feet, covering a total horizontal distance of approximately 230 meters with varying tangent grades between 0.026 and 0.039 and incorporating symmetrical parabolic curve transitions.
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PHYSICAL DATA
for
FEDERAL HIGHWAY ADMINISTRATION
WESTERN FEDERAL LANDS HIGHWAY DIVISION
Umpqua ERFO Repairs 2022
OR ERFO FS UMPQU 615‐2022‐2(1)
SITE 3220‐1.42
VERTICAL ALIGNMENT
Vertical Alignment Review Report Report Created: Thursday, January 30, 2025
Time: 8:52:09 AM
Project: Design IntlFt Description:
File Name: c:\pw_work_wfl\d0620285\or-ef-umpqu615-2022-2-1_3220-1.42_ali.dgn Last Revised: 1/30/2025 08:44:32
Note: All units in this report are in feet unless specified otherwise.
Horizontal Alignment: ALI_MAIN_3220 Horizontal Description:
Horizontal Style: Alignment\Baseline
Vertical Alignment: PRO_MAIN_3220 Vertical Description:
Vertical Style: Alignment\Baseline Station Elevation
Element: Linear
START 300+00.00 2392.709
VPC 300+29.25 2393.603
Tangent Grade: 0.031 Tangent Length: 29.248
Element: Symmetrical Parabola
VPC 300+29.25 2393.603
VPI 300+59.25 2394.521
VPT 300+89.25 2395.298
Length: 60.000
Entrance Grade: 0.031 Exit Grade: 0.026 r = 100 * (g2 - g1) / L: -0.777 K = l / (g2 - g1): 128.620
Middle Ordinate: -0.035
Element: Linear
VPT 300+89.25 2395.298
VPC 301+58.75 2397.100
Tangent Grade: 0.026 Tangent Length: 69.502
Element: Symmetrical Parabola
VPC 301+58.75 2397.100
VPI 301+88.75 2397.878
VPT 302+18.75 2399.037
Page 1 of 2Vertical Alignment Review Report
1/30/2025
Horizontal Alignment: ALI_MAIN_3220 Horizontal Description:
Horizontal Style: Alignment\Baseline Length: 60.000
Entrance Grade: 0.026 Exit Grade: 0.039 r = 100 * (g2 - g1) / L: 2.120 K = l / (g2 - g1): 47.163
Middle Ordinate: 0.095
Element: Linear
VPT 302+18.75 2399.037
END 302+30.37 2399.486
Tangent Grade: 0.039 Tangent Length: 11.625
Page 2 of 2Vertical Alignment Review Report
1/30/2025
File details come from the government source that posted it. Updated .