Lee's Summit

Intersection sight distance has been adequately provided according to the PE responsible for these plans. The PE has prepared and/or reviewed the plans in accordance with their seal of approval with full understanding of the ISD requirements and necessary design modifications in coordination with the roadway improvements, grading, clearing and retaining wall design. All aforementioned necessary design modifications to ensure adequate ISD are presumed correct as submitted in the drawings for construction. If ISD is not adequate upon construction of these improvements as designed, the applicant/engineer shall be responsible for additional design modifications and reconstruction as needed.

Revise Engineer's Estimate of Probable Construction Costs based on comments provided under separate cover.

Intersection sight distance must be reviewed in consideration of the proposed retaining wall at the intersection of Black Twig and Lowenstien. The wall appears to be within the sight triangle given the plan height and location.

All signs should be provided a station note on the plans for location.

The construction of these planned improvements must be coordinated with the engineering plans associated with Pryor Road improvements and traffic signals. For example, the right-turn lane proposed within these plans along Pryor Road at Lowenstien Drive is in conflict with existing Fiber Optic and Street Light Systems which must be relocated and those relocation plans are detailed in the other engineering plan set.

There is a portion of the park improvements shown as a part of these plans. Please remove all park related items in this plan set and include in the Lowenstein Park FDP plans.

Add mid-block ADA ramps with detectable warnings for the added crosswalk west of the private drive.

Review all ADA ramps and verify that turning spaces, meeting slope requirements, are included wherever a turn from the sidewalk to the ramp is required. Please label all turning spaces in the same manner as ramps and landings are labeled.

Revise the detectable warnings on the SW corner of Lowenstein and Pryor heading north to be more straight across.

Revise the ADA ramp on the SW corner of Lowenstein and Pryor heading east to direct towards the crosswalk a bit more. I drew some ideas that I’ll send under separate cover. These are just to show you the general intent, not to direct a revision.

Remove the cost information from the Summary of Quantities table, it should only include quantity information. Only include items that are a part of this plan set in the table.

Revise the overlapping text (ROW info and station) at Cross-Section 22+50.00.

Move the proposed W11-2 (Pedestrian Warning Sign) and W16-9P sign assembly (collocated on same post) shown near Sta. 37+55, Left Side of Lowenstien Dr. for Westbound Traffic, to approximate Sta. 39+00 (reasonably separated from other proposed signs), Left Side of Lowenstien Dr. for Westbound Traffic. This should provide the desirable advance warning ahead of the crosswalk location and at least 50' of separation from the nearest westbound sign on same side of road (though more separation is preferred if available). This will also separate the warning sign assembly from any other signs (currently shown collocated with lane use sign which should not occur).

Move the proposed W11-2 (Pedestrian Warning Sign) and W16-9P sign assembly (collocated on same post) shown near Sta. 35+05, Right Side of Lowenstien Dr. for Eastbound Traffic, to approximate Sta. 34+00 (and reasonably separated from other proposed signs), Right Side of Lowenstien Dr. for Eastbound Traffic.

Move the proposed W11-2 (Pedestrian Warning Sign) and arrow sign assembly (collocated on same post) shown near Sta. 36+90, Left Side of Lowenstien Dr. for Westbound Traffic, to approximate Sta. 36+20, Left Side of Lowenstien Dr. for Westbound Traffic, adjacent to the propsoed crosswalk and associated ramp for crossing Lowenstien Dr.

Delete the sign symbol shown on the plans near Station 22+80, Left Side of Lowenstien Dr., at Blacktwig. The signs were deleted with previous plan revisions, but the symbol is still shown.

Change the shown Type I crosswalk markings to Type II crosswalk markings (i.e. reference the typical mid-block crossing on the Std. Detail) near Sta. 36+25 across Lowenstien Dr. The 24" White Lines shall be thermoplastic material.

Sheet 1: • Update the month in the project title. • Include a Summary of Quantities table on this sheet or elsewhere within the plan set.

Sheet 3: Retaining walls are not permitted within public easements. As discussed, either relocate walls outside of platted easements or adjust easements by vacation to remove walls from easements.

Sheet 6: Detectable warnings are only required when crossing a public street. Please remove from the private entrance on this sheet and at all other private entrances throughout the rest of the plan set.

Sheets 13A-13D: • The specific details of the ADA-accessible sidewalk ramps must include, at a minimum, the design details specified in Section 5304.8 of the Design and Construction Manual. Elevation call-outs, although required, are not sufficient. Other design details specified in this section are required, including slope call-outs which comply with the criteria listed in Table LS-5, and section views specified in 5304.8. • Please revise the design parameters included in the Legend, they do not meet City requirements.

Sheets 15-21: Include the design HGL in the Plan view.

Sheet 15: Indicate L x W for the proposed riprap at D-1, not just total square yards.

Sheet 17: Provide energy dissipation at F-1.

Sheets 35-46: Review cross-sections for overlapping text, such as the R/W callout that overlaps with the Sta.22+50 label.

Prior to approval of this plan set, SUBMIT an Engineer's Estimate of Probable Construction Costs or the contract amount from the project contract documents. This must be an itemized list of unit prices and quantities, with quantities matching the approved plan set.

Pavement Markings: All 6" White (Dashed and Solid) lines shall be thermoplastic. All 12" Yellow lines shall be thermoplastic.

The W11-2 (ped warning signs) should be removed from the intersection of Blacktwig and Lowenstien (3 locations).

The 6" Solid White Crosswalk lines along Lowenstien at the two private driveways should be removed (two locations).

R1-1 Stop Signs are recommended at the private drive approaches to Lowenstien (may be included in the private road plans in lieu of the public road plans).

The right-turn arrows on the westbound approach to Lowenstien intersection at Pryor Road need to be revised (private drive at Summit Woods) to eliminate the revised lane alignment conflicts. Suggest just removing the right-turn arrows and leaving the existing left-turn arrows. Potentially include a lane use sign for left-turn only and thru/right lane on this westbound approach.

Right Turn lane and intersection improvements on Pryor Road north of Lowenstien (e.g. Summit Woods Xing) have been included in separate plan submittal.

A Type II crosswalk should be marked across Lowenstien at the commercial driveway(s) intersection just west of Pryor Road where the W11-2 Ped Warning signs indicate a mid-block (uncrontrolled) crossing is located. The crosswalk is probably best located on the west side of this intersection. If so, the W11-2 sign on the north side should be moved to the crosswalk location on the NW corner. There should also be advance crosswalk warning signs with Ahead supplemental sign for this crosswalk in each direction of travel along Lowenstien Drive.

Review comments regarding the traffic signal and interconnect plans are pending submittals. These plans may result in additional comments on the roadway plans.

Title Sheet - Lowenstien Road should be Lowenstien Drive. The posted speed limit of Lowenstein Drive is 25 mph. Verify and update the posted speed and design speed information. Some portions of the vertical alignments do not meet the noted 35 mph design speed criteria, but all meets a 25-30 mph design criteria.

Concrete jointing plans should be included in the drawings for review and approval.

General layout sheet should include project control points, benchmarks, etc. Roadway centerline information is missing.

Plan and Profile Sheets: a.) Generally, all horizontal alignments lack sufficient detail to establish (e.g. N/E, bearing, PI, CP's, etc.) b.) All ROW's and Easements should be shown and labeled. c.) Some notes and details/call-outs are overlapping and should be separated for clarity. d.) The plans do not include all necessary dimensions or notes pertaining to radii, PC's/PI's/PT's, etc. for the location of proposed improvements. The typical sections do not include sufficient information for all improvements proposed on the plans. For example, the medians and curb curves along Lowenstien are missing detailed information.

Plan Sheet Station 21+00 to 22+50, Lowenstien Drive, should be revised to provide a matching three-lane wide section at the PC west of Black Twig centerline that has adequate transition tapers over approximately 65 feet (both sides) to the existing conditions at Station 21+00 (where improvements were shown to begin).

Fence relocation should be shown and detailed on the plans at the SW corner of Black Twig and Lowenstien. The intersection sight distance should be measured at this intersection by the engineer (not in the field or City) to ensure the relocation is not in conflict.

The plans did not include a southbound right-turn lane along Pryor Road at the proposed right-in/right-out driveway.

The right-turn lane along Pryor Road at Lowenstien Drive was drawn with 250 feet of storage and 100 feet of taper. The condition of approval was a 200-foot storage and 150-foot taper in accordance with the AMC (a 12.5:1 Taper Ratio is stated in the AMC). Either revise accordingly or discuss why the recommended alternative is shown/proposed.

The westbound right-turn lane along Lowenstien Drive at the commercial entrance was drawn with approximately 180 feet of storage and 100 feet of taper. The condition of approval was a 150-foot storage and 150-foot taper in accordance with the AMC (a 12.5:1 Taper Ratio is stated in the AMC). Either revise accordingly or discuss why the recommended alternative is shown/proposed.

The eastbound left-turn lane along Lowenstien Drive at the proposed commercial entrance (near Sta. 36+00) was drawn with 75 feet of storage and a 40-foot, reverse curved taper. Can additional storage and longer taper be considered within the proposed median? The standard minimum storage for this condition is 150 feet with 150-foot reverse curve. However, shorter distances for this unique condition may be reasonably supported given the traffic volume, and vertical and horizontal alignments. Either revise the plan to reasonably/practically increase the storage and taper within the shown median towards the minimum standards or discuss why the recommended alternative is shown/proposed and cannot be revised.

Pavement Marking and Signing Sheets: a.) Remove references to MoDOT. City of Lee's Summit standards and specifications for pavement marking and signing shall be used. b.) Note that all longitudinal lines shall be high-build paint and all symbols, crosswalk lines, stop lines, diagonals, etc. shall be preformed thermoplastic per City specifications. c.) Revise the markings per plan geometric changes (e.g. widening of Lowenstien Drive west of Black Twig, turn lane revisions, etc.). d.) Revise the markings to match City standards. Remove the TWLT arrows on Lowenstien at Sta. 23+12, 31+05 and 32+62. Move TWLT arrows from Sta. 29+66 to Sta. 30+50 and Sta. 26+09 to Sta. 25+50. Add LT arrows for a westbound left-turn lane along Lowenstien at Black Twig (a turn lane that ends at Sta. 24+25 and transitions to TWLT lane per City details with 75' gap and 18' overlap). Add LT arrow for a westbound left within the introduction of TWLT lane along Lowenstien Drive at Sta. 32+65. The painted lines and diagonals for the median extension near Sta. 33+00 are not shown or labeled properly. Change the marking types as necessary for these turn lane revisions. e.) Remove the crosswalks across Lowenstien Drive at Black Twig and along Lowenstien Drive across the south commercial entrance near Sta. 36+50. The crosswalks at the signal shall all be Type I, per City standard (parallel lines). f.) Add dashed lines within the signal intersection for dual left turn movements along the left-turn path. Verify the left-turn movements do not conflict with the approach stop position or other concurrent traffic movements. g.) Turn arrow spacing for all dedicated left and right-turn lanes should be adjusted to match City standards. h.) Remove all thru arrow or any thru/right arrows. i.) Verify the stop lines are 4 feet separated from the crosswalk. The stop line on Lowenstien at Pryor appears too close to the crosswalk. j.) Label/dimension all markings, including longitudinal lines and all symbols. k.) Add crosswalk signs, crosswalk ahead warning signs for the mid-block crossing on Lowenstien at the proposed commercial driveway. l.) Add speed limit (25) sign near Sta. 35+00. Remove existing and add new stop signs with street name signs at the intersection of Black Twig and Lowenstien for north and south approaches. Add end of road treatment signing (evenly spaced Object Markers) on the north approach to the intersection of Black Twig and Lowenstien. Add TWLT sign near Sta. 25+00 for eastbound traffic, a TWLT sign near Sta. 31+00 for westbound traffic, a Lane Use sign near Sta. 38+00 for eastbound traffic and near Sta. 38+50 for westbound traffic. Add Keep Right (Symbolic) sign near Sta. 38+15 for westbound traffic in the median and Sta. 32+35 for eastbound traffic in the median.

Submit: • Traffic Signal plans. • Engineer’s Estimate of Construction Costs.

Include specific ADA-accessible sidewalk ramp design at ramp locations. Meet the design requirements shown in LS Section 5300 of the Design and Construction Manual. Detectable warnings are only required when crossing a public street.

Sheet C-2: • Include a Table of Quantities, as indicated in the title block for this sheet. • Revise Construction Note 20 to only refer to Lee’s Summit specifications. Any applicable APWA specifications are incorporated by reference in the Lee’s Summit specifications.

Sheet C-3: • Please label the vertical line dimensioned as 99.67 feet east of Black Twig centerline Sta. 50+00. • There is some concrete hatching shown at the southwest corner of the Tract D detention basin. Please clarify or remove.

Sheet C-4: Several of the Typical Sections show “Future” sidewalk. All sidewalk within the public right-of-way must be constructed with the public infrastructure. Revise this sheet and all other applicable sheets throughout the plan set.

Sheet C-5: • Include existing street grade at the west end of the Lowenstein Drive construction. • Include ADA sidewalk ramps at the intersection. • Include the water line crossing at Sta. 32+19 in the Profile view.

Sheet C-6: • The curb inlet at Sta. 27+77.51 does not meet the City’s minimum size requirements. Please revise. • Sheet C-7: Include ADA sidewalk ramps at the intersection with the commercial entrances.

Sheet C-8: Add underdrain at the low point on Lowenstein Drive as required by th Design and Construction Manual Section 5203.19.

Sheet C-9: Include an End Street Construction label similar to the Begin Street Construction label.

Sheet C-12: The curb inlet at Sta. 59+13.79 does not meet the City’s minimum size requirements. Please revise.

Sheet C-13: • Include elevations at the north end of Proposed Retaining Wall A. • Relocate overlapping text at the southwest corner of the intersection. • Include the water line crossing at Sta. 64+76 in the Profile view.

Sheet C-14: • Indicate the design storm. • It is difficult to see the drainage areas for Lines T & H. • Is there a reason Structure T-3 can’t connect to Structure H-5? It would eliminate a street crossing.

Sheet C-15: • include station equations where multiple lines join together on this and all applicable sheets. • Include the following note on any profile sheet applicable: “Compacted Fill shall be placed to a minimum 18” above the top of the pipe prior to installation.” • Show and label the limits of the compacted fill placement in the Profile view. Use hatching for clarity. • Will any additional energy dissipation be required at the Structure D-1 discharge? • Include the water line crossing upstream of Structure D-5 in the Profile view.

Sheet C-16: The curb inlet at Sta. 252+93.66 does not meet the City’s minimum size requirements. Please revise. Verify that the structure size matches that shown on Sheet C-12.

Sheet C-19: Include the water line crossings upstream of Structures H-4 & T-1 in the Profile view.

Sheet C-21: • Include the water line crossing upstream of Structure G-2 in the Profile view. • The curb inlet at Sta. 365+51.23 does not meet the City’s minimum size requirements. Please revise.

Sheet C-22: Revise the detail number for the temporary construction entrance to the APWA detail number for that item and add the detail to the plan set.

Sheets C-23 – C-24: • Include singing as indicated in the title blocks. • Revise the pavement Marking note on each sheet to refer to City specifications, not MoDOT.

Sheet C-30: • The Lee’s Summit Junction Box standard detail, STM-3, is included in the plan set. Remove Detail 403. Base a grate inlet or double grate inlet standard detail on the City’s standard details. • Remove Detail 047 and add the APWA detail for that item to the plan set.

Sheet C-35: The details on this sheet are already included in the plan set on Sheet C-27.

Include a sheet showing all design details for the parking lot on park property. Include slopes, elevations, ADA requirements, etc.