50.24 Type, Size and Location Plans for Culverts, Bridges and Culvert Bridges

Transcription

1 50.24 Culverts, Bridges and Culvert Bridges Type, Size and Location (T, S & L) Plans shall be required for all Bridges, Culvert Bridges and Culverts of eight-foot (8') clear span or greater as follows: 1) For all new Subdivision and Special Use Permit Projects. The T, S & L plans for the proposed structure shall be submitted prior to grading plan approval. The completion of a geotechnical report which conforms to Section or Section is necessary to submit T, S & L plans which will be satisfactory to the Department. 2) For St. Louis County Projects designed by consultants where indicated in the consultant contract. Acceptable T, S & L plans will be submitted on a single 24" x 36" sheet and will be arranged and drafted in a legible manner. The T, S & L plans will contain the following views and information: Plan View 1) Provide span lengths; out-to-out structure length; skew angle; out-to-out structure width; and roadway horizontal clearance between curbs, barriers or railings. 2) Show stations and elevations along profile grade line. 3) Show station equation for intersecting reference line on roadways. 4) Show stations and offsets to roadway tapers that are across or under the structure. 5) Bridges are to be laid out with stationing going from the left side of the sheet to the right side of the sheet. 6) Culverts are to be laid out with stationing going from the bottom of the sheet to the top of the sheet. (Culvert lengths from the roadway centerline to the culvert ends along its centerline should be rounded off to the nearest 1"). 7) Show stationing direction on road under, if applicable. 8) Show location of point of minimum vertical under-clearance on bridges over roadways or railroads. 9) Show horizontal clearances of proposed piers to under-passing roadways. 10) Show horizontal clearance from edge of roadway to culvert headwall. 11) Show stage construction line and temporary sheet piling location when applicable. 9/1/ Culverts, Bridges and Culvert Bridges

2 12) Show deck drains and spacing. 13) Plot boring locations. 14) Show proposed channel paving or ungrouted revetment within twenty feet (20') upstream and downstream from bridge. 15) Show outline of limits of existing structure (where applicable) including piers. 16) Show embankment slopes adjacent to structure. 17) Show slope of channel paving at right angle to stream. 18) Show any pipe culverts and local drainage near structure. 19) Add shoulder-widening note for guardrail where structures are wider than approach roadway. "The width between the guardrails shall be the width between the bridge rails or parapets which will require approach shoulder widening." 20) Where required, show proposed bridge approach slabs and bridge approach pavement. 21) Show location of bridge railing or barrier, bridge anchor sections, barrier transition, curb transitions, approach sidewalks and guardrail terminations. 22) Check for proper drafting (particularly at bridge ends). 23) Show railroad mile post information and railroad deck drain note where applicable. 24) Show north arrow. 25) Show all retaining walls and provide appropriate details. Elevation View 1) Use same scales for vertical and horizontal dimensioning. 2) Show bridge exception stations. 3) Show back elevation of barrier and/or railing. 4) Show estimated footing elevations, pile type with estimated capacities and lengths and battered piles as needed for foundations on piles and allowable soil bearing pressures for foundations and spread footings. 5) Show proposed culvert opening dimensions if applicable. 6) Show pipe culverts through embankment if required. 7) Show pier elevation consistent with pier sketch. 9/1/ Culverts, Bridges and Culvert Bridges

3 8) Plot natural ground line. 9) Show stream bed elevation where applicable. 10) Show proposed structural excavation datum, if any. 11) Place culvert flowline in accordance with the provisions of Section ) Show high water elevation and design storm. 13) Show pier thickness (stream crossing only). 14) Add note for bridges over railroads - "No deck drains will be permitted in the span over tracks or within 10' of cross arms of a railroad pole line." 15) Provide vertical scale to determine natural ground elevations. Upper Left Hand Corner Data 1) Show benchmark note. 2) Show existing structure description, length, width and old structure number (if applicable). 3) Show staging instructions, if applicable. 4) Add note when to remove existing structure, if necessary. 5) Show salvage materials, if any. Cross Section 1) The following should be shown on each cross section: a) Dimension bridge roadway and shoulder widths. b) Slab thickness. c) Stringer size, spacing, haunches and note indicating composite action (if applicable). d) Rail or barrier type and vertical dimensions. e) Crown configuration and location of profile grade application. f) Median and sidewalks. g) For box culverts, show channel slope. 9/1/ Culverts, Bridges and Culvert Bridges

4 h) For curved bridges: Offset tangent, all beams...radii. i) Staging details with type of temporary barrier to be used. j) Deck Drains - Omit drains over roadways and sidewalks, over railroads as previously noted and on the high side of superelevation. Section thru Abutment 1) Show proper type along with a partial elevation of the superstructure extending from the abutment. 2) Show bridge exception application location. 3) Show approach slab. 4) Show only dimensions that are necessary for planning purposes. 5) Show all bearing types. 6) Show vertical drain. 7) Show Class A Underdrain. Pier Sketch 1) Show proper type of pier or abutment used. 2) Show correct number of columns. 3) Make sketch to scale for aesthetic evaluation of pier shape. 4) Add crash wall for bridges over railroads. 5) Provide dimension from ground line to top of crash wall. 6) Show location and type of all proposed construction joints. Supplemental Sections 1) Show section thru paved slope protection. 2) Show section through riprap. 9/1/ Culverts, Bridges and Culvert Bridges

5 Title Block 1) General plan, road name over feature name, project number, bridge number, name of development (if applicable), name and address of consulting engineer, name and address of developer (if applicable). Profile Grade 1) Show location, grades, curve length and elevations and stations of PVC, PVT and PVI. 2) Show all profiles for roads over and under. Horizontal Curve Data 1) PI Station, I, D, R, L, T, E, PC Station, SE and SE or crown attainment stations. Location Sketch 1) Show Range, Township, Principle Meridian, Section Numbers, North Arrow and Proposed Structure. Design Stresses 1) Show for both cast-in-place and precast units. 2) Indicate both HS-25 and St. Louis County T45 loading unless one loading type controls the design of all structural components. 3) Indicate future wearing surface loading. 4) Indicate the design specifications used. 5) For culverts and culvert bridges, indicate the design lateral pressure and surcharge loadings used. 6) For bridges, indicate the seismic performance category, acceleration coefficient and site coefficient. 9/1/ Culverts, Bridges and Culvert Bridges

6 Other 1) Required Hydraulic Table for Bridges and Culvert Bridges - All plans submitted for structures which are considered to be bridges or culvert bridges shall contain a completed version of the following table regardless of the actual design flow: HYDROLOGIC DATA Drainage Area = Design Discharge = Design High Water Elevation = Frequency = BASIC FLOOD DATA Q 100 = High Water Elevation = 2) Show roadway data (Classification), including design ADT, DHV, and ADTT. 3) Show offset sketches for horizontally curved roadways. 9/1/ Culverts, Bridges and Culvert Bridges