(1) 
When road or driveway construction is required by conditions of land development, building permit, special use permit, and other approvals in the Lewis County Code, plans for the proposed improvements shall be prepared meeting all of the requirements in these standards. Failure to provide the requirements set out in this chapter shall constitute an incomplete application and shall not be accepted for review.
(2) 
All road construction or reconstruction plans shall be prepared by and bear the stamp of a qualified professional civil engineer, licensed in the state of Washington. Final plans and profile drawings must be accepted by the county engineer prior to the start of construction and recording of the development.
(3) 
Construction plans for roads accessing state highways shall be submitted by the applicant's engineer directly to WSDOT. All requirements, signed agreement or approval for the intersection or road approach must be obtained by the applicant before final plan approval will be granted by Lewis County. A copy of the approved plan from WSDOT shall be submitted to Lewis County before final plan approval. Where state requirements exceed these standards, state standards shall govern.
(Ord. 1194 Exh. B, 2007)
(1) 
Plans, profiles, and details shall be submitted on sheets 24 inches by 36 inches or 22 inches by 34 inches.
(a) 
All plan submittal prior to approval shall include the following:
(i) 
Three complete sets of plans, profiles, and details. (Refer to LCC § 12.60.160 through § 12.60.190 for plan content requirements.)
(ii) 
Two sets of drainage calculations.
(b) 
Upon final design acceptance by the county engineer, the following shall be submitted:
(i) 
One reproducible set of plans, profiles, and details (Mylar or vellum) for the administrator's review.
(ii) 
Five complete sets of county-reviewed plans, profiles, and details stamped and signed by the project engineer.
(c) 
Changes to approved plans, profiles, and details shall be submitted for review and acceptance prior to construction. The following shall be submitted:
(i) 
Three revised sets of plans, profiles, and details, along with a textual description summarizing the revision being requested; followed by:
(ii) 
Five copies of the signed revised plans, profiles, and details.
(d) 
Final submittal shall be a complete set of "as-built" drawings on good quality reproducible Mylar 24 inches by 36 inches or 22 inches by 34 inches. All changes to the original drawings shall be shown with a single line or a series of X's on the as-built drawings. As-built drawings shall be submitted prior to final acceptance of any road, structure, drainage, or facility for final acceptance by the county. Such drawings shall describe any and all revisions to the approved plans.
(e) 
As-built drawings shall include a description or summary of all changes to the original drawings in a text block on the plans.
(Ord. 1194 Exh. B, 2007)
(1) 
Cover Sheet. Road construction plans submitted to the county for review and approval shall have a plan cover sheet containing the following information:
(a) 
A vicinity map drawn to an appropriate scale showing the project and road system network.
(b) 
Easements, tracts, stormwater management facilities, all buffer and screening areas.
(c) 
Notes that are applicable to the project.
(2) 
Site plan for private projects drawn to an appropriate scale showing the entire development and road system network, including its connection to an existing county road or state highway. In the event the site is too large for the required information to be shown for the entire project site, the site plan view must serve as an index to subsequent detailed plan sheets.
(3) 
Title block to include:
(a) 
Project name.
(b) 
County assigned project or permit number.
(c) 
Sheet number.
(d) 
Road name.
(e) 
Designed by.
(f) 
Drawn by.
(g) 
Checked by.
(h) 
Date of drawing.
(i) 
Engineer name, firm address and phone number.
(4) 
Legend (APWA standard symbols).
(5) 
One-quarter, one-quarter section, township, and range on each sheet.
(6) 
Scale: Standardized engineering scale shall be used; no scale smaller than one inch equals 100 feet will be accepted, unless it is the overall site plan sheet. Details for clarification may be shown at a convenient scale, normally one inch equals 10 feet or one inch equals 20 feet.
(7) 
North arrow.
(8) 
Section and lot lines.
(9) 
All topographic features within right-of-way limits and sufficient area beyond to resolve questions of setback, slope, stormwater management, access onto abutting property, and road continuations. This shall include, but is not limited to, ditch flow lines, utility locations, fences, existing curbing and approaches, pertinent trees and shrubbery, and other appurtenances that would affect the construction of the road.
(10) 
Typical roadway cross-section(s) of proposed road.
(11) 
Road alignments with 100-foot stationing, preferably increasing to the north or east and reading from left to right; stationing at points of curvature, tangency, and intersection; ties to section or quarter corners at each end or other established and monumented survey control points; and each section crossing.
(12) 
Curve data, including, but not limited to, radius, point of intersections, delta, arc length and tangent length on all horizontal lines, point of curvature, and point of tangency.
(13) 
Indication of whether the roads are public or private.
(14) 
Bearings and distance on road centerline.
(15) 
Identification of all county roads and adjoining subdivisions when it is pertinent to the scope of the project.
(16) 
Edge of pavement and width.
(17) 
Sidewalks and width, if applicable.
(18) 
Right-of-way lines and widths for the proposed road and intersecting roads. The plans shall show dimensioned lot lines, tracts, easement areas, and lot numbers. Sufficient right-of-way location information shall be provided to geometrically tie the road location to the right-of-way location.
(19) 
Utilities and structures within and adjacent to the right-of-way.
(20) 
Easement type, width, and ownership.
(21) 
Cut and fill quantities.
(22) 
Existing and proposed drainage features indicating direction of flow, type of each drainage channel, pipe, and structure.
(23) 
Size, invert in, invert out, rim elevations, station of structures, and offsets for all drainage facilities.
(24) 
All proposed utilities that will be constructed.
(25) 
Environmentally sensitive and critical areas, including buffers within project area.
(26) 
Existing wells within 200 feet of project limits. If there are no existing wells, such statement shall be included on the plan.
(27) 
Known existing drain fields within project limits.
(28) 
Beginning, quarter points, and ending elevations of curb returns.
(29) 
Existing centerline and gutter line grades for all frontage improvements.
(30) 
All existing utilities within project limits.
(31) 
Traffic control signing and signal layout.
(32) 
Pavement marking details with stations and offsets.
(33) 
At a minimum, control monuments shall be set at the beginning and end of a new road, cul-de-sac, angle points, point of curvature, and point of tangency.
(34) 
For urban style improvements, finished grade elevations shall be shown on:
(a) 
All radius returns at beginning, quarter points, and end.
(b) 
All cul-de-sacs at beginning, quarter points, and end.
(35) 
Temporary and permanent erosion control.
(36) 
Grading plans.
(37) 
Proposed roadway names.
(38) 
Other data necessary for the specific project. [See Exhibit 1 – Civil Plan Review Application, and Exhibit 2 – Plan Checklist.[1]]
[1]
Editor's Note: Exhibit 1 Civil Plan Review Application and Exhibit 2 Plan Checklist are included as attachments to this title.
(39) 
If required, proposed stormwater facilities per Chapter 15.45 LCC may be included with these road plans. Otherwise, they shall be provided as a separate plan set.
(Ord. 1194 Exh. B, 2007)
(1) 
Profile drawings of the project shall include the following information:
(a) 
Original ground line along center line, edge of pavement, ditch flow line or arrows, 25-foot stations through superelevation, vertical curves, and at significant ground breaks and topographic features with accuracy to within 0.1 feet on unpaved surfaces and 0.02 feet on paved surfaces. When a road extends to the perimeter of the project, ground lines shall be extended at least 100 feet to show any changes in contour, which might affect the profile of the proposed road.
(b) 
Existing and proposed road, sewer, water, and storm drainage profile with stationing to show stationing of points of curvature, tangency, and intersection of vertical curves with elevations to 0.01 feet.
(c) 
Vertical Scale. Standardized engineering scale shall be used. Clarifying details shall be shown at a convenient scale. Use one inch equals 10 feet for vertical when horizontal plans are one inch equals 100 feet.
(d) 
Values for grade and length of vertical curve shall be shown with the profiles on a numbered grid.
(e) 
Superelevation data shall be required and included for roadways of 30 miles per hour design speed or more.
(f) 
Vertical datum used on all benchmarks will refer to NGVD 1929 control, i.e., mean sea level.
(Ord. 1194 Exh. B, 2007)
(1) 
A typical cross-section shall include the following:
(a) 
Width of pavement, shoulders, walks, ditches, and right-of-way.
(b) 
Type of road.
(c) 
Depth of gravel base, crushed surfacing, and hard surfacing.
(d) 
Slope of crown, shoulder, and ditch design.
(e) 
Total width from centerline to back of ditch, including width of new pavement on widening of existing roads.
(f) 
A separate, full-width roadway typical section for each road or portion of road having a different section, labeled with appropriate stationing (i.e., Sta. 10+00 to Sta. 12+36).
(g) 
Pivot point for superelevations.
(h) 
Location of existing and proposed utilities.
(i) 
All other data necessary for a specific project.
(Ord. 1194 Exh. B, 2007)
(1) 
When either of the road centerline profile grades within 35 feet of an intersection have a gradient less than or equal to one percent or greater than or equal to eight percent, an intersection detail drawn to standardized engineering scale must be included as a detail on the plans. The detail will show spot elevations every 25 feet on the road centerline around the radius return and grade elevations for drainage structures in the intersection. The intersection plan must be clearly detailed to show flow line grades and how surface drainage will be controlled at the intersection. Radius return data for lesser gradients shall be shown on the road drawings.
(2) 
Provisions for handicap access where applicable.
(3) 
Signalization plans where applicable.
(4) 
Profile grades for all roads (public and private) intersecting onto a county road (existing or proposed) shall be designed and constructed so that intersection sight distance is available at the intersection. Refer to LCC § 12.60.260.
(Ord. 1194 Exh. B, 2007)
Engineering as-built or record drawings for roads and drainage facilities will be required prior to final inspection approval. In some cases, these drawings will be required during the inspection process to approve facilities before the next phase of construction can proceed.
(Ord. 1194 Exh. B, 2007)
All surveying and staking shall be performed by an engineering or surveying firm capable of performing such work. The engineer or surveyor directing such work shall be an engineer or land surveyor licensed by the state of Washington.
A cursory check of the plans against the attached plan checklist will be made by the development engineer. If the plans meet the minimum checklist requirements as to content, they will be routed to the appropriate county staff and the plan review process will begin. If minimum checklist requirements are not met, plans will be returned to submitting engineer[1].
(Ord. 1194 Exh. B, 2007)
[1]
Editor's Note: Exhibit 1 Civil Plan Review Application and Exhibit 2 Plan Checklist are included as attachments to this title.