For the following exercise refer to the Jefferson County Transportation Design and Technical Criteria Manual for intersection design standards. 1. Auxiliary Lanes: Digger Drive Melvin Ave Melvin Avenue: Digger Drive: Jeffco Temp-4 Collector Street (36' FL to FL) with Attached Sidewalks Jeffco Temp-7 Local Street (34' FL to FL) with Detached Sidewalks. Using a 45 mph design speed create a drawing of the intersection with the following modifications: a. Add a 12-foot right turn lane from eastbound Melvin Ave to southbound Digger Drive. b. Add an 11-foot left turn lane from southbound Digger Drive to eastbound Melvin Avenue with storage for four cars. Your drawing does not need to be to scale but it should be well dimensioned to illustrate your proposed new intersection. Page 1 of 2 Homework #8 Fall 2021 2. Intersection Grading: You are provided the following information from two proposed profiles and asked to design an intersection. Atlantic Avenue runs due east and Baltic Avenue runs due north. Atlantic Avenue: Jeffco Temp-8, Local Street (28' FL to FL) with Attached Sidewalks Along the centerline: 10+50.00, 5430.15 13+00.00, 5433.90 Baltic Avenue: Jeffco Temp-8, Station Equation: Local Street (28' FL to FL) with Attached Sidewalks Along the centerline: 26+25.00, 5432.67 27+75.00, 5431.32 11+70.00 Atlantic Ave 27+05.00 Baltic Ave Using the Jefferson County Criteria prepare a drawing of the intersection with proposed spot elevations at every point of curb return (PCR, eight total) and anywhere else you think is needed. Through the intersection the roadway cross slope may vary from 1.5% to 4.0% if needed. a. Designate low points, if applicable, where storm inlets might need to be located. b. Provide grade arrows with values around each curve return. c. Provide grade arrows along curb and gutter wherever the grade in the gutter does not match the centerline profile grade. Your drawing should be to scale. Keep in mind that there is a lot of information to show on the sketch so provide plenty of room.

For the following exercise refer to the Jefferson County Transportation Design and Technical Criteria Manual for intersection design standards. 1. Auxiliary Lanes: Digger Drive Melvin Ave Melvin Avenue: Digger Drive: Jeffco Temp-4 Collector Street (36' FL to FL) with Attached Sidewalks Jeffco Temp-7 Local Street (34' FL to FL) with Detached Sidewalks. Using a 45 mph design speed create a drawing of the intersection with the following modifications: a. Add a 12-foot right turn lane from eastbound Melvin Ave to southbound Digger Drive. b. Add an 11-foot left turn lane from southbound Digger Drive to eastbound Melvin Avenue with storage for four cars. Your drawing does not need to be to scale but it should be well dimensioned to illustrate your proposed new intersection. Page 1 of 2 Homework #8 Fall 2021 2. Intersection Grading: You are provided the following information from two proposed profiles and asked to design an intersection. Atlantic Avenue runs due east and Baltic Avenue runs due north. Atlantic Avenue: Jeffco Temp-8, Local Street (28' FL to FL) with Attached Sidewalks Along the centerline: 10+50.00, 5430.15 13+00.00, 5433.90 Baltic Avenue: Jeffco Temp-8, Station Equation: Local Street (28' FL to FL) with Attached Sidewalks Along the centerline: 26+25.00, 5432.67 27+75.00, 5431.32 11+70.00 Atlantic Ave 27+05.00 Baltic Ave Using the Jefferson County Criteria prepare a drawing of the intersection with proposed spot elevations at every point of curb return (PCR, eight total) and anywhere else you think is needed. Through the intersection the roadway cross slope may vary from 1.5% to 4.0% if needed. a. Designate low points, if applicable, where storm inlets might need to be located. b. Provide grade arrows with values around each curve return. c. Provide grade arrows along curb and gutter wherever the grade in the gutter does not match the centerline profile grade. Your drawing should be to scale. Keep in mind that there is a lot of information to show on the sketch so provide plenty of room.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter7: Intersection Design

Section: Chapter Questions

Problem 17P

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Transcribed Image Text:For the following exercise refer to the Jefferson County Transportation Design and Technical Criteria Manual for intersection design standards. 1. Auxiliary Lanes: Digger Drive Melvin Ave Melvin Avenue: Digger Drive: Jeffco Temp-4 Collector Street (36' FL to FL) with Attached Sidewalks Jeffco Temp-7 Local Street (34' FL to FL) with Detached Sidewalks. Using a 45 mph design speed create a drawing of the intersection with the following modifications: a. Add a 12-foot right turn lane from eastbound Melvin Ave to southbound Digger Drive. b. Add an 11-foot left turn lane from southbound Digger Drive to eastbound Melvin Avenue with storage for four cars. Your drawing does not need to be to scale but it should be well dimensioned to illustrate your proposed new intersection. Page 1 of 2 Homework #8 Fall 2021 2. Intersection Grading: You are provided the following information from two proposed profiles and asked to design an intersection. Atlantic Avenue runs due east and Baltic Avenue runs due north. Atlantic Avenue: Jeffco Temp-8, Local Street (28' FL to FL) with Attached Sidewalks Along the centerline: 10+50.00, 5430.15 13+00.00, 5433.90 Baltic Avenue: Jeffco Temp-8, Station Equation: Local Street (28' FL to FL) with Attached Sidewalks Along the centerline: 26+25.00, 5432.67 27+75.00, 5431.32 11+70.00 Atlantic Ave 27+05.00 Baltic Ave Using the Jefferson County Criteria prepare a drawing of the intersection with proposed spot elevations at every point of curb return (PCR, eight total) and anywhere else you think is needed. Through the intersection the roadway cross slope may vary from 1.5% to 4.0% if needed. a. Designate low points, if applicable, where storm inlets might need to be located. b. Provide grade arrows with values around each curve return. c. Provide grade arrows along curb and gutter wherever the grade in the gutter does not match the centerline profile grade. Your drawing should be to scale. Keep in mind that there is a lot of information to show on the sketch so provide plenty of room.

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