or-ef-umpqu615-2022-2-1_4710-2.7_proposed-horizontal-alignment.pdf
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The document is a Horizontal Alignment Review Report for the Umpqua ERFO Repairs 2022 project (Site 4710-2.7), created by the Federal Highway Administration's Western Federal Lands Highway Division. The report provides detailed technical specifications for a road alignment, including precise geospatial coordinates, station points, and geometric characteristics of linear and circular road elements. The alignment data includes multiple road segments with specific details such as tangential directions, curve radii, delta angles, chord lengths, and northing and easting coordinates, covering road sections from station 100+00.00 to 104+84.52.
The technical document is part of a federal highway repair project, specifically documenting the horizontal geometric design of a road reconstruction or repair effort. Each road segment is meticulously mapped with technical parameters like curve radius (ranging from 45 to 210 feet), delta angles (between 10.364° and 65.043°), and precise directional changes. The alignment review provides engineers and contractors with exact mathematical and spatial information necessary for precise road construction, ensuring accurate road curvature, tangent lengths, and directional transitions throughout the proposed road alignment.
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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 4710‐2.7
HORIZONTAL ALIGNMENT
Horizontal Alignment Review Report Report Created: Thursday, January 30, 2025
Time: 8:32:49 AM
Project: Design IntlFt Description:
File Name: c:\pw_work_wfl\d0620286\or-ef-umpqu615-2022-2-1_4710-2.7_ali.dgn Last Revised: 1/30/2025 08:24:02
Note: All units in this report are in feet unless specified otherwise.
Alignment Name: ALI_MAIN_4710 Alignment Description:
Alignment Style: Alignment\Baseline Station Northing Easting
Element: Linear
START ( START ) 100+00.00 610500.093 4298626.975
PC ( PC ) 100+11.92 610512.018 4298626.998
Tangential Direction: N0.113°E
Tangential Length: 11.925
Element: Circular
PC ( PC ) 100+11.92 610512.018 4298626.998
HPI ( HPI ) 100+61.76 610561.850 4298627.096
CC ( CC ) 610512.431 4298416.999
PT ( PT ) 101+09.78 610606.414 4298604.795
Radius: 210.000 Delta: 26.699° Left
Degree of Curvature (Arc): 27.284° Length: 97.855
Tangent: 49.833 Chord: 96.972
Middle Ordinate: 5.674 External: 5.832
Back Tangent Direction: N0.113°E Back Radial Direction: S89.887°E
Chord Direction: N13.236°W Ahead Radial Direction: N63.414°E
Ahead Tangent Direction: N26.586°W
Element: Linear
PT ( PT ) 101+09.78 610606.414 4298604.795
PC ( PC ) 101+28.01 610622.713 4298596.638
Tangential Direction: N26.586°W Tangential Length: 18.226
Page 1 of 3Horizontal Alignment Review Report
1/30/2025
Element: Circular
PC ( PC ) 101+28.01 610622.713 4298596.638
HPI ( HPI ) 101+69.99 610660.257 4298577.849
CC ( CC ) 610667.467 4298686.064
PT ( PT ) 102+07.50 610699.962 4298591.491
Radius: 100.000 Delta: 45.548° Right
Degree of Curvature (Arc): 57.296° Length: 79.497
Tangent: 41.983 Chord: 77.420
Middle Ordinate: 7.796 External: 8.455
Back Tangent Direction: N26.586°W Back Radial Direction: N63.414°E
Chord Direction: N3.811°W Ahead Radial Direction: S71.037°E
Ahead Tangent Direction: N18.963°E
Element: Linear
PT ( PT ) 102+07.50 610699.962 4298591.491
PC ( PC ) 102+43.56 610734.063 4298603.209
Tangential Direction: N18.963°E Tangential Length: 36.058
Element: Circular
PC ( PC ) 102+43.56 610734.063 4298603.209
HPI ( HPI ) 102+99.24 610786.725 4298621.303
CC ( CC ) 610792.555 4298432.977
PT ( PT ) 103+51.57 610840.404 4298606.501
Radius: 180.000 Delta: 34.379° Left
Degree of Curvature (Arc): 31.831° Length: 108.005
Tangent: 55.683 Chord: 106.392
Middle Ordinate: 8.040 External: 8.416
Back Tangent Direction: N18.963°E Back Radial Direction: S71.037°E
Chord Direction: N1.773°E Ahead Radial Direction: N74.584°E
Ahead Tangent Direction: N15.416°W
Element: Linear
PT ( PT ) 103+51.57 610840.404 4298606.501
Page 2 of 3Horizontal Alignment Review Report
PC ( PC ) 103+85.72 610873.328 4298597.422
Tangential Direction: N15.416°W
Tangential Length: 34.152
Element: Circular
PC ( PC ) 103+85.72 610873.328 4298597.422
HPI ( HPI ) 104+03.86 610890.813 4298592.601
CC ( CC ) 610926.493 4298790.227
PT ( PT ) 104+21.90 610908.880 4298591.004
Radius: 200.000 Delta: 10.364° Right
Degree of Curvature (Arc): 28.648° Length: 36.177
Tangent: 18.138 Chord: 36.127
Middle Ordinate: 0.817 External: 0.821
Back Tangent Direction: N15.416°W Back Radial Direction: N74.584°E
Chord Direction: N10.234°W Ahead Radial Direction: N84.948°E
Ahead Tangent Direction: N5.052°W
Element: Linear
PT ( PT ) 104+21.90 610908.880 4298591.004
PC ( PC ) 104+33.44 610920.376 4298589.987
Tangential Direction: N5.052°W Tangential Length: 11.541
Element: Circular
PC ( PC ) 104+33.44 610920.376 4298589.987
HPI ( HPI ) 104+62.13 610948.956 4298587.461
CC ( CC ) 610924.339 4298634.813
PT ( PT ) 104+84.52 610963.306 4298612.306
Radius: 45.000 Delta: 65.043° Right
Degree of Curvature (Arc): 127.324° Length: 51.084
Tangent: 28.692 Chord: 48.385
Middle Ordinate: 7.056 External: 8.369
Back Tangent Direction: N5.052°W Back Radial Direction: N84.948°E
Chord Direction: N27.469°E Ahead Radial Direction: S30.010°E
Ahead Tangent Direction: N59.990°E
Page 3 of 3Horizontal Alignment Review Report
File details come from the government source that posted it. Updated .