Alternative Intersection

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Brent Hawkins
7 years ago
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1 Alternative Intersection

2 A Pleasant Drive

3 Until Someone Crosses Your Path

4 Intersection Evolution

5 Intersection Evolution The Following Intersections are based on roadway and Right of Way for a distance of 1,300 LF from the Intersection.

6 Basic Intersection Major No Control Minor No Control

7 Basic Intersection Major No Control Minor No Control CONSTRUCTION COST: Pavement 124,224 $5/SF $ 621,120 Traffic signs $ 500 RIGHT OF WAY COST: 311,640 $10/SF $3,116,400 TOTAL $3,738,020 TRAFFIC ANALYSIS: Maximum capacity 7,000 ADT (COMBINED)

Traffic signs $ 500 RIGHT OF WAY COST: 311,640 SF @ $10/SF

8 Basic Intersection Major No Control Minor Stop Control

9 Basic Intersection Major No Control Minor Stop Control CONSTRUCTION COST: Pavement 124,224 $5/SF $ 621,120 Traffic signs $ 500 RIGHT OF WAY COST: 311,640 $10/SF $3,116,400 TOTAL $3,738,020 TRAFFIC ANALYSIS: Maximum capacity 7,000 ADT (COMBINED)

10 Basic Intersection Major Stop Control Minor Stop Control

11 Basic Intersection Major Stop Control Minor Stop Control CONSTRUCTION COST: Pavement 124,224 $5/SF $621,120 Traffic signs $1,000 RIGHT OF WAY COST: 311,640 $10/SF $3,116,400 TOTAL $3,738,520 TRAFFIC ANALYSIS: Maximum capacity 10,000 ADT (COMBINED)

signs $1,000 RIGHT OF WAY COST: 311,640 SF @ $10/SF $3,116,400

12 Round About Major Yield Control Minor Yield Control

13 Round About Major Yield Control Minor Yield Control CONSTRUCTION COST: Pavement 166,000 $5/SF $ 830,000 Islands and Curbs 1,800 $25/ LF $ 45,000 Traffic signs $ 3,000 Demo existing pavement 10,000 $5/SF $ 50,000 RIGHT OF WAY COST: 353,450 $10/SF $3,534,500 TOTAL COST: $4,462,500 TRAFFIC ANALYSIS: Maximum capacity 40,000 ADT (COMBINED)

Demo existing pavement 10,000 SF @ $5/SF $ 50,000 RIGHT OF WAY COST: 353,450 SF @ $10/SF

14 SIGNALIZED INTERSECTION (INITIAL) Major Signal Control Minor Signal Control

15 SIGNALIZED INTERSECTION (INITIAL) Major Signal Control Minor Signal Control CONSTRUCTION COST: Pavement 82,500 $5/SF $ 412,500 Signal $100,000/ EA $ 100,000 RIGHT OF WAY COST: 353,450 $10/SF $3,534,500 TOTAL $4,047,000 TRAFFIC ANALYSIS: Maximum capacity 50,000 ADT (COMBINED)

System @ $100,000/ EA $ 100,000 RIGHT OF WAY COST: 353,450 SF @ $10/SF

16 SIGNALIZED INTERSECTION (Ultimate) Major Signal Control Minor Signal Control

17 SIGNALIZED INTERSECTION (Ultimate) Major Signal Control Minor Signal Control CONSTRUCTION COST: Pavement 446,846 $5/SF $2,234,230 Signal $100,000/ EA $ 100,000 RIGHT OF WAY COST: 664,067 $10/SF $6,640,670 TOTAL $8,974,900 TRAFFIC ANALYSIS: Maximum capacity 70,000 ADT (COMBINED)

System @ $100,000/ EA $ 100,000 RIGHT OF WAY COST: 664,067 SF @ $10/SF

18 CONTIUOUS FLOW INTERSECTION 1300FT LIMITED ACCESS Major: Signal Control Minor : Signal Control

19 CONTINUOUS FLOW INTERSECTION Major: Signal Control Minor: Signal Control CONSTRUCTION COST: Pavement 654,706 $5/SF $ 3,273,500 2-Signal $100,000/ EA $ 200,000 RIGHT OF WAY COST: 1,129,911 $10/SF $11,299,110 TOTAL $14,772,610 TRAFFIC ANALYSIS: Maximum capacity 100,000 ADT (COMBINED)

@ $100,000/ EA $ 200,000 RIGHT OF WAY COST: 1,129,911 SF @ $10/SF

20 SINGLE POINT INTERCHANGE Major: Free Flow Minor : Signal Control

21 SINGLE POINT INTERCHANGE Major: Free Flow Minor : Signal Control CONSTRUCTION COST: Pavement 590,000 $5/SF $ 2,950,000 Signal $100,000/ EA $ 100,000 Earthwork 129,000 $10/CY $ 1,290,000 Structure 30,825 $125/SF $ 3,853,125 RIGHT OF WAY COST: 1,129,911 $10/SF $11,299,110 TOTAL $19,492,735 TRAFFIC ANALYSIS: Maximum capacity 160,000 ADT (COMBINED)

23 Right of Way Issues CFI vs Urban Interchange CFI RIGHT OF WAY FUTURE INTERCHANGE RIGHT OF WAY CFI RIGHT OF WAY FUTURE INTERCHANGE RIGHT OF WAY FUTURE INTERCHANGE RIGHT OF WAY FUTURE INTERCHANGE RIGHT OF WAY CFI RIGHT OF WAY CFI RIGHT OF WAY

24 Right of Way Issues CFI vs Urban Interchange SURPLUS RIGHT OF WAY INTERCHANGE RIGHT OF WAY SURPLUS RIGHT OF WAY INTERCHANGE RIGHT OF WAY INTERCHANGE RIGHT OF WAY INTERCHANGE RIGHT OF WAY SURPLUS RIGHT OF WAY SURPLUS RIGHT OF WAY

25 COSTS

26 COSTS AND CAPACITY IMPROVEMENTS

27 CASE STUDY #1 KY 237/KY 18

28 CASE STUDY #1 KY 237/KY 18

29 AS PROPOSED DESIGN KY 18 KY 237

30 VE ALTERNATIVE 100ft KY 18 KY 18 KY 237 KY 237

31 CONSTRUCTION COST SAVINGS SINGLE POINT INTERCHANGE $11,395,298 CONTINUOUS FLOW INTERSECTION $ 5,559,898 POSSIBLE SAVINGS $ 5,835,400

32 CASE STUDY #2 US 49 GULFPORT, MS AS PROPOSED

33 VE ALTERNATIVE #1 SOUTHBOUND FLYOVER

34 VE ALTERNATIVE #2 JUG HANDLE NE QUADRANT

35 VE ALTERNATIVE #3 JUG HANDLE SE QUADRANT

36 VE ALTERNATIVE #4 TRIPLE LEFT TURNS

37 ALTERNATIVE COMPARISON V/C RATIO DELAY (Veh-Hr) R/W COST CONST COST(000) TOTAL COST AS PROPOSED CFI ALT B-1 SOUTHBOUND LANES FLYOVER BRIDGE ALT B-2 JUGHANDLE NORTHEAST QUADRANT ALT B-3 JUGHANDLE SOUTHEAST QUADRANT ALT B-4 TRIPLE LEFT TURN LANES NB $ 4,000 $ 3,750 $ 7, $ - $ 6,066 $ 6, $ 250 $ 4,177 $ 4, $ 1,250 $ 4,177 $ 5, $ - $ 4,438 $ 4,438

38 CONCLUSION The Continuous Flow Intersection is a viable alternative to constructing an urban interchange and should be considered when traffic projections do not exceed the CFI s operational capacity. Purchase the necessary controlled access and Right of Way for the Urban Interchange to reduce any access complications for the future interchange.

Design and Implementation of Slot Left-Turn Lanes on the Manitoba Highway Network

Design and Implementation of Slot Left-Turn Lanes on the Manitoba Highway Network Brent Hartmann, P. Eng., Project Design Engineer, Manitoba Infrastructure and Transportation Derek Durant, P. Eng., Senior