|
The Circulation Element discusses the following components of the circulation system.
- Functional Classification
- Level of Service
- Transit
- Non-vehicular Transportation
Functional Classification
The objective of functional classification is to group into connecting systems roads and streets having similar
functions, purposes and importance in the roadway network. In turn, the systems are distinguished by their more
general functions and levels of importance.
Careful long-range planning of the City's roadways is needed to meet Grass Valley's Circulation goals. This
includes the establishment of a comprehensive designation of all roadways throughout the City. A sound functional
classification is essential for:
Long-range planning and coordination
Determining right-of-way requirements and preserving right-of-way
Defining design standards and operations of facilities in each class
Developing budgets and funding programs according to priority
Determining acceptable levels of traffic volumes, especially on the local and collector street systems
Roadways have two functions, which are incompatible from a design standpoint: 1) to provide mobility and 2)
to provide land access. High and constant speeds are desirable for land access. A functional classification system
provides a functional specialization in meeting the access and mobility requirements of the roadways. Local streets
emphasize a high level of mobility for through movement, and collectors offer a more balanced service for both
functions.
The existing street network in the City of Grass Valley is a product of both roadways that have provided access
to the older portions of the City for decades, and roadways that were designed to serve the areas of new development.
As a result, in the older portions of the City, some roadways function as arterial or collector roadways, but they
have not previously been classified as such.
Freeways / Expressways. Freeways and Expressways are regionally important facilities which
link the community of Grass Valley with its Nevada County neighbors and with regional destinations. These facilities
are high speed, restricted access facilities providing little direct linkage to adjoining property but providing
access via interchanges or, in the interim, major signalized intersections. Freeways and Expressways are designed
to the standards of the California Department of Transportation (Caltrans) and improvements to these facilities
are planned and implemented through a cooperative effort of Caltrans, the Nevada County Transportation Commission,
Nevada County, the City of Grass Valley and Nevada City. State Highways 20 and 49 are the Freeways and Expressways
serving Grass Valley.
Arterial Streets. The primary function of arterial roadways is to move large volumes of traffic
through the community to other sections of the City and beyond. In more recently developed areas the right-of-way
for arterials is either 84 or 100 feet, and while most arterials are two lanes, four lane arterials can be developed
in response to traffic demands. Some roadways function as arterials due to the current high traffic volumes and
their key linkages between one section of the City and another. For these roadways, current right-of-way widths
vary, but most contain only two traffic lanes.
Collector Streets. Collector streets generally link local residential streets and commercial
and office parking areas to the arterials. In new areas, these streets are generally designed with a 54 or 60 foot
right-of-way and contain two traffic lanes with bike lanes. In older portions of the community, a number of roadways
function as collector roadways due to moderate traffic volumes and their linkage to the arterial roadway system.
Right-of-way widths vary, with most containing two traffic lanes.
Local Streets. Local streets provide direct access to abutting land and access to the collector
street system. The right-of-way for local streets is normally 54 feet which provides for two traffic lanes and
a narrow parking lane that doubles as a Class II bikeway on both sides. Actual pavement widths for local streets
vary throughout the City.
The Circulation Plan (existing and planned arterial and collector roadway system) is depicted in Figure 4-1
and Table 4-1. All roadways not included as freeways, arterial, or collector roadways in Figure 4-1 and Table 4-1
are local streets. Conceptual alignments through planned annexations areas indicate potential ultimate connections
of existing and planned arterials. The exact location and need for each new roadway in the Special Development
Areas will be evaluated during the preparation of Specific Plans or similar detailed development plans.
New transportation facilities needs as shown on the Circulation Plan (Figure 4-1) are:
- Construction of a new interchange on Highway 20/49 at Dorsey Drive.
- Construction of a new intersection or interchange on Highway 49 in the area of Crestview Drive-Smith Road in
southern Grass Valley.
- Construction of a new arterial road through the North Star area linking the Brighton/McCourtney intersection
near Highway 20 with the new Crestview-Smith intersection or interchange on Highway 49. This new road would be
connected to a southward extension of Freeman Lane. It is the City's policy, however, that Freeman Lane not be
extended southward from its current termination north of Wolf Creek, until and unless the new Crestview-Smith arterial
road is constructed.
- Extension of Dorsey Drive easterly to Brunswick Road.
- Reconstruction of the McKnight Way Interchange on Highway 49 to create modern roundabout intersections.
- Reconstruction of the Highway 174/Highway 20/49 interchange as a modern roundabout.
- Construction of a new road network in the northeastern quadrant of the Planning Area, linking existing and
planned streets and roads.
- Closure of Idaho-Maryland road at the Brunswick Road intersection.
TABLE 4-1
FUNCTIONAL CLASSIFICATION
CITY OF GRASS VALLEY'S ARTERIAL AND COLLECTOR ROADWAY
|
ARTERIALS
|
COLLECTORS
|
|
South Auburn Street
Brighton Street Extension
Brunswick Road
Crestview Extension
Empire Street
Idaho Maryland Road (part)
LaBarr Meadows Road
Main Street
Mill Street
Neal Street
Nevada City Highway
Sierra College Drive (part)
|
Allison Ranch Road
Alta Street
East Bennett
Brighton Street
Butler Street
Dorsey Drive
Empire Street
Freeman Lane
Hughes Road
Idaho Maryland Road (part)
McCourtney Road
McKnight Way
Mill Street
Richardson Street
Ridge Road
Sierra College Drive (part)
Sutton Way
Taylorville Road
Whispering Pines Lane
|
All roadways not listed here are designated as local streets.
Another important component of the City's functional classification are truck routes. Currently the City has
no designated truck routes within the Grass Valley City limits, although trucks are prohibited on East Maryland
Drive.
Level of Service
For General Plan level analysis, the levels of service (LOS) on individual roadway segments is determined based
on general daily traffic volume thresholds which account for such factors as the level of access control, terrain,
traffic control, etc. The thresholds employed in the Nevada County General Plan and by the Nevada County Transportation
Commission (NCTC) in previous regional studies were used. These daily traffic volume standards are presented in
Table 4-2.
TABLE 4-2
DAILY PLANNING SERVICE VOLUME CRITERIA
| FUNCTIONAL CLASS |
LANES
|
LOS A
|
LOS B
|
LOS C
|
LOS D
|
LOS E
|
Interstate and
Freeway |
4
6
|
59,400
89,100
|
69,300
103,950
|
79,200
118,800
|
89,100
133,650
|
99,000
148,500
|
| Arterial |
2
4
6
|
9,300
18,600
27,900
|
10,850
21,700
32,550
|
12,400
24,800
37,200
|
13,950
27,900
41,850
|
15,500
31,000
46,500
|
| Collector |
2
|
6,600
|
7,700
|
8,800
|
9,900
|
11,000
|
Currently there are four roadway segments in the Planning Area which fail to deliver LOS "D" conditions.
As shown in Table 4-3, these are:
TABLE 4-3
EXISTING ROADWAY LEVEL OF SERVICE DEFICIENCIES
|
|
ROAD |
LOCATION |
NUMBER OF LANES
|
ADT
|
LOS
|
|
|
Sutton Way |
W of Brunswick Road |
2
|
13,661
|
E
|
|
|
Brunswick Road |
S of Idaho Maryland Road |
2
|
14,504
|
E
|
|
|
Brunswick Road |
NW of Loma Rica Drive |
2
|
14,056
|
E
|
|
|
Nevada City Highway |
Grass Valley City Limits |
2
|
14,355
|
E
|
The City intends to mitigate these roadway deficiencies through its Capital Improvement Program which is described
in the implementation section of this component.
Levels of Service are also determined for intersections using procedures outlined in the 1994 Highway Capacity
Manual. Table 4-4 indicates the characteristics of Levels of Service at intersections controlled by stop signs
and by traffic signals.
Levels of Service are estimated for future travel conditions to ensure that a roadway will provide acceptable
operations for its "design life", which is commonly 20 years. For the General Plan, the year 2020 will
be used for estimating traffic demand and determining Levels of Service on the roadway system. The City has established
Level of Service "D" as the goal for both the General Plan and for the development of Citywide and regional
traffic impact fees.
TABLE 4-4
LEVEL OF SERVICE DEFINITIONS
|
LEVEL OF SERVICE
|
SIGNALIZED INTERSECTION
|
UNSIGNALIZED INTERSECTION
|
|
"A"
|
Uncongested operations, all queues clear in a single-signal cycle. Delay 5.0 sec |
Little or no delay.
Delay 5 sec/veh |
|
"B"
|
Uncongested operations, all queues clear in a single cycle.
Delay > 5.0 sec and 15.0 sec |
Short traffic delays.
Delay > 5 sec/veh and 10 sec/veh |
|
"C"
|
Light congestion, occasional backups on critical approaches.
Delay > 15.0 sec and 25.0 sec |
Average traffic delays.
Delay > 10 sec/veh and 20 sec/veh |
|
"D"
|
Significant congestions of critical approaches but intersection functional. Cars required to wait
through more than one cycle during short peaks. No long queues formed.
Delay > 25.0 sec and 40.0 sec |
Long traffic delays.
Delay > 20 sec/veh and 30 sec/veh |
|
"E"
|
Severe congestion with some long standing queues on critical approaches. Blockage of intersection
may occur if traffic signal does not provide for protected turning movements. Traffic queue may block nearby intersection(s)
upstream of critical approach(es).
Delay > 40.0 sec and 60.0 sec |
Very long traffic delays, failure, extreme congestion.
Delay > 30 sec/veh and 45 sec/veh |
|
"F"
|
Total breakdown, stop-and-go operation. Delay > 60.0 sec |
Intersection blocked by external causes. Delay > 45 sec/veh |
| Sources: 1994 Highway Capacity Manual |
Existing and Future Traffic Conditions
An analysis of the roadway improvements needed to maintain a Level of Service "D" standard in the
year 2020 has been conducted using land use growth assumptions and the NCTPA sub-regional travel demand model.
Year 2020 roadway improvement needs are shown in Table 4-5. Figure 4-2 is an index map showing numbered locations
of traffic counts shown in Table 4-5. Numbered locations correspond to road segments in the "Road" column.
Figure 4-3 shows road segments requiring four lanes by the Year 2020, based upon projected traffic volumes and
an assumed LOS "D" or better.
TABLE 4-5
ROADWAY DAILY TRAFFIC VOLUMES LEVELS OF SERVICE
SECTION 1 - FREEWAYS
|
|
ROAD |
LOCATION |
NO. OF LANES
|
EXISTING
|
2020
|
|
EXISTING
|
YEAR 2020
|
ADT
|
LOS
|
ADT
|
LOS
|
|
1.
|
State Route 49/20 |
S of N. Auburn St |
4
|
4
|
29,000
|
A
|
59,500
|
B
|
|
2.
|
State Route 49/20 |
S of Bennett St |
4
|
4
|
36,000
|
A
|
52,500
|
A
|
|
3.
|
State Route 49/20 |
S of Idaho-Maryland |
4
|
4
|
37,000
|
A
|
64,900
|
B
|
|
73.
|
State Route 49/20 |
S of Dorsey |
4
|
4
|
30,500
|
A
|
56,600
|
A
|
|
4.
|
State Route 49/20 |
S of Brunswick Rd |
4
|
4
|
30,500
|
A
|
41,100
|
A
|
|
74.
|
State Route 49/20 |
N of Brunswick Rd |
4
|
4
|
30,000
|
A
|
40,000
|
A
|
|
75.
|
State Route 49 |
S of Crestview/Smith Ext |
4
|
4
|
21,700
|
A
|
35,800
|
A
|
|
5.
|
State Route 49 |
N of Crestview/Smith Ext |
4
|
4
|
21,700
|
A
|
32,700
|
A
|
|
6.
|
State Route 49 |
S of SR 20 |
4
|
4
|
32,500
|
A
|
41,650
|
A
|
|
7.
|
State Route 20 |
W of Mill St |
4
|
4
|
14,200
|
A
|
25,170
|
A
|
|
8.
|
State Route 20 |
W of SR 49 |
4
|
4
|
15,000
|
A
|
27,500
|
A
|
|
76.
|
State Route 20 |
W of Brighton |
4
|
4
|
14,200
|
A
|
25,200
|
A
|
ADT = Average Daily Traffic
LOS = Level of Service
( ) = Planned Road
TABLE 4-5
ROADWAY DAILY TRAFFIC VOLUMES LEVELS OF SERVICE
SECTION 2 - ARTERIALS
|
|
ROAD |
LOCATION |
NO. OF LANES
|
EXISTING
|
2020
|
|
EXISTING
|
YEAR 2020
|
ADT
|
LOS
|
ADT
|
LOS
|
|
9.
|
State Route 174 |
E of SR 20 |
2
|
2
|
6,200
|
A
|
12,000
|
C
|
|
10.
|
State Route 174 |
E of Central St |
2
|
2
|
4,500
|
A
|
7,350
|
A
|
|
11.
|
State Route 174 |
E of Ophir St |
2
|
2
|
5,100
|
A
|
5,150
|
A
|
|
12.
|
State Route 174 |
S of Race St |
2
|
2
|
5,400
|
A
|
7,250
|
A
|
|
13.
|
State Route 174 |
E of Empire Mine |
2
|
2
|
5,600
|
A
|
9,000
|
A
|
|
79.
|
South Auburn St |
S of Main |
2
|
2
|
NA
|
NA
|
5,700
|
A
|
|
14.
|
South Auburn St |
S of Mohawk St |
2
|
2
|
7,802
|
A
|
7,800
|
A
|
|
15.
|
South Auburn St |
N of School Alley |
2
|
2
|
6,852
|
A
|
6,950
|
A
|
|
16.
|
South Auburn St |
N of Whiting St |
2
|
2
|
7,139
|
A
|
10,400
|
B
|
|
17.
|
South Auburn St |
NW of E. McKnight Way |
2
|
4
|
8,228
|
A
|
14,300
|
A
|
|
90.
|
Bennett Road |
E of SR 49/20 |
2
|
2
|
NA
|
NA
|
5,700
|
A
|
|
94.
|
Brighton Extension |
S of McCourtney |
(2)
|
2
|
NA
|
NA
|
4,600
|
A
|
|
95.
|
Brighton Extension |
W of Allison Ranch Rd |
(2)
|
2
|
NA
|
NA
|
5,600
|
A
|
|
18.
|
Brunswick Road |
On Overcrossing 49/20 |
4
|
4
|
26,172
|
D
|
17,100
|
A
|
|
72.
|
Brunswick Road |
N of Dorsey Drive |
2
|
4
|
12,235
|
C
|
14,600
|
A
|
|
19.
|
Brunswick Road |
S of Ranchview Ct |
2
|
4
|
12,235
|
C
|
14,600
|
A
|
|
20.
|
Brunswick Road |
N of Whispering Pines |
2
|
4
|
14,504
|
E
|
12,600
|
A
|
|
21.
|
Brunswick Road |
NW of Loma Rica Dr |
2
|
4
|
14,056
|
E
|
18,600
|
A
|
|
22.
|
Brunswick Road |
NW of E. Bennett |
2
|
2
|
10,686
|
B
|
11,200
|
C
|
|
69.
|
Centennial Drive |
S of Idaho Maryland |
2
|
2
|
NA
|
NA
|
9,600
|
B
|
|
62.
|
Crestview/Smith Ext |
E of Allison Ranch Rd |
(2)
|
2
|
NA
|
NA
|
6,050
|
A
|
|
102.
|
Crestview/Smith Ext |
E of Taylorville |
(2)
|
2
|
NA
|
NA
|
3,100
|
A
|
|
40.
|
Dorsey Drive |
SE of Segsworth Way |
2
|
4
|
5,541
|
A
|
15,400
|
A
|
|
67.
|
Dorsey Drive |
W of Sutton Way |
(2)
|
2
|
NA
|
NA
|
13,500
|
D
|
|
85.
|
Dorsey Drive |
E of Sutton |
(2)
|
2
|
NA
|
NA
|
12,800
|
D
|
|
86.
|
Dorsey/Whispering Pines Loop |
N of Idaho Maryland |
(2)
|
2
|
NA
|
NA
|
12,800
|
D
|
|
87.
|
Dorsey/Whispering Pines Loop |
S of Idaho Maryland |
(2)
|
2
|
NA
|
NA
|
8,250
|
A
|
|
23.
|
Empire Street |
E of Le Duc St |
2
|
2
|
4,923
|
A
|
4,900
|
A
|
|
64.
|
Idaho Maryland Rd |
E of Railroad |
2
|
4
|
12,111
|
C
|
24,700
|
C
|
|
24.
|
La Barr Meadows |
SE of E. McKnight Way |
2
|
2
|
10,028
|
B
|
10,100
|
B
|
|
80.
|
La Barr Meadows |
N of Crestview/Smith Ext |
2
|
2
|
NA
|
NA
|
7,950
|
A
|
|
82.
|
La Barr Meadows |
S of Crestview/Smith Ext |
2
|
2
|
NA
|
NA
|
11,200
|
C
|
|
74.
|
Main Street |
S of Squirrel Creek |
2
|
2
|
5,763
|
A
|
10,200
|
B
|
|
63.
|
Main Street |
W of Auburn |
2
|
2
|
NA
|
NA
|
9,450
|
B
|
|
71.
|
Main Street |
E of Bennett St |
2
|
2
|
12,172
|
C
|
16,500
|
F
|
|
70.
|
Main Street |
N of Idaho Maryland |
2
|
4
|
NA
|
NA
|
21,900
|
C
|
|
73.
|
McCourtney Road |
W of 20 Ramps |
2
|
2
|
NA
|
NA
|
9,900
|
B
|
|
50.
|
W. McKnight Way |
SW of Taylorville Rd |
2
|
4
|
8,882
|
A
|
16,800
|
A
|
|
25.
|
Mill Street |
S of Neal St |
2
|
2
|
5,786
|
A
|
12,100
|
C
|
|
26.
|
Mill Street |
NE of Rhode Island St |
2
|
2
|
5,750
|
A
|
8,600
|
A
|
|
92.
|
Mill Street |
N of McCourtney |
2
|
2
|
NA
|
NA
|
12,100
|
C
|
|
27.
|
Neal Street |
E of Church St |
2
|
2
|
5,239
|
A
|
3,750
|
A
|
|
77.
|
Nevada City Hwy |
S of Sierra College |
2
|
4
|
NA
|
NA
|
15,400
|
A
|
|
28.
|
Nevada City Hwy |
Grass Valley City Limits |
2
|
4
|
14,355
|
E
|
15,000
|
A
|
|
83.
|
Nevada City Hwy |
E of Brunswick |
2
|
2
|
NA
|
NA
|
11,800
|
C
|
|
78.
|
Ophir |
S of Bennett |
2
|
2
|
NA
|
NA
|
9,050
|
A
|
|
57.
|
Sierra College Dr |
E of Main Street |
2
|
4
|
4,546
|
A
|
16,700
|
A
|
|
58.
|
Sutton Way |
E of Brunswick |
2
|
2
|
9,040
|
A
|
10,800
|
A
|
|
59.
|
Sutton Way |
W of Brunswick |
2
|
2
|
13,661
|
F
|
6,300
|
A
|
|
68.
|
Sutton Way |
N of Dorsey Dr |
2
|
2
|
NA
|
NA
|
6,150
|
A
|
|
84.
|
Sutton Way |
S of Dorsey Dr |
2
|
2
|
NA
|
NA
|
5,200
|
A
|
|
60.
|
Whispering Pines Ln |
W of Brunswick Rd |
2
|
2
|
1,494
|
A
|
8,250
|
A
|
ADT = Average Daily Traffic
LOS = Level of Service
NA = Not Available
TABLE 4-5
ROADWAY DAILY TRAFFIC VOLUMES LEVELS OF SERVICE
SECTION 3 - COLLECTORS
|
|
ROAD |
LOCATION |
NO. OF LANES
|
EXISTING
|
2020
|
|
EXISTING
|
YEAR 2020
|
ADT
|
LOS
|
ADT
|
LOS
|
|
29.
|
Allison Ranch Rd |
S of McCourtney |
2
|
2
|
720
|
A
|
600
|
A
|
|
30.
|
Allison Ranch Rd |
N of North Star Mine Rd |
2
|
2
|
665
|
A
|
600
|
A
|
|
98.
|
Allison Ranch Rd |
S of Crestview/Smith Ext |
2
|
2
|
NA
|
NA
|
50
|
A
|
|
31.
|
Alta Street |
N of West Main St |
2
|
2
|
4,203
|
A
|
3,000
|
A
|
|
32.
|
Alta Street |
S of Alta Vista Dr (S) |
2
|
2
|
3,587
|
A
|
1,300
|
A
|
|
33.
|
Alta Street |
N of Alta Vista Dr (S) |
2
|
2
|
3,476
|
A
|
850
|
A
|
|
34.
|
Alta Street |
SE of Ridge Road |
2
|
2
|
3,380
|
A
|
1,100
|
A
|
|
96.
|
Old Auburn Rd |
S of McCourtney |
2
|
2
|
NA
|
NA
|
1,450
|
A
|
|
81.
|
Old Auburn Rd |
S of North Star Connection |
2
|
2
|
NA
|
NA
|
1,750
|
A
|
|
66.
|
E. Bennett Road |
E of Centennial |
2
|
2
|
NA
|
NA
|
5,250
|
A
|
|
35.
|
E. Bennett Road |
E Grass Valley City Limit |
2
|
2
|
2,142
|
A
|
8,150
|
C
|
|
93.
|
Brighton Street |
N of McCourtney |
2
|
2
|
NA
|
NA
|
6,750
|
B
|
|
36.
|
Brighton Street |
N of McCourtney |
2
|
2
|
3,830
|
A
|
6,750
|
B
|
|
37.
|
Brighton Street |
S of Chapel |
2
|
2
|
2,581
|
A
|
3,950
|
A
|
|
38.
|
Butler Street |
W of Minnie |
2
|
2
|
813
|
A
|
3,150
|
A
|
|
39.
|
Butler Street |
E of Packard Dr |
2
|
2
|
929
|
A
|
3,100
|
A
|
|
65.
|
Centennial Drive |
N of E. Bennett |
(2)
|
2
|
NA
|
NA
|
7,350
|
B
|
|
91.
|
North Collector |
W of Allison Ranch |
(2)
|
2
|
NA
|
NA
|
600
|
A
|
|
99.
|
South Collector |
E of Old Auburn |
(2)
|
2
|
NA
|
NA
|
1,150
|
A
|
|
100.
|
South Collector |
E of North Star Loop Rd |
(2)
|
2
|
NA
|
NA
|
1,400
|
A
|
|
97.
|
South Collector |
W of Allison Ranch |
(2)
|
2
|
NA
|
NA
|
1,950
|
A
|
|
41.
|
Empire Street |
E of Kate Hayes St |
2
|
2
|
4,278
|
A
|
3,900
|
A
|
|
42.
|
E. Empire Street |
E Grass Valley City |
2
|
2
|
4,178
|
A
|
3,900
|
A
|
|
43.
|
Freeman Lane |
N of McKnight Way |
2
|
2
|
8,142
|
C
|
12,200
|
F
|
|
44.
|
Freeman Lane |
SW of McKnight |
2
|
2
|
NA
|
NA
|
4,800
|
A
|
|
61.
|
Freeman Lane |
E of Mill |
2
|
2
|
NA
|
NA
|
9,250
|
D
|
|
45.
|
Hughes Road |
NW of E. Main St |
2
|
2
|
7,852
|
C
|
13,200
|
F
|
|
46.
|
Hughes Road |
S of Ridge Rd |
2
|
2
|
3,872
|
A
|
10,400
|
E
|
|
47.
|
Idaho Maryland Rd |
W of Brunswick |
2
|
2
|
3,570
|
A
|
3,850
|
A
|
|
48.
|
Idaho Maryland Rd |
E of Brunswick Rd |
2
|
2
|
1,918
|
A
|
3,050
|
A
|
|
49.
|
McCourtney Road |
W of Brighton St |
2
|
2
|
8,650
|
C
|
9,300
|
D
|
|
101.
|
McCourtney Road |
W of Old Auburn Rd |
2
|
2
|
5,676
|
A
|
10,100
|
E
|
|
51.
|
Mill Street |
N of Bank Street |
2
|
2
|
5,399
|
A
|
5,150
|
A
|
|
52.
|
Richardson Street |
E of Alta Street |
2
|
2
|
1,171
|
A
|
2,900
|
A
|
|
53.
|
Ridge Road |
W of Ridge Estates Rd |
2
|
2
|
5,059
|
A
|
8,000
|
C
|
|
54.
|
Ridge Road |
N of Hughes Rd |
2
|
2
|
7,815
|
C
|
10,900
|
E
|
|
55.
|
Ridge Road |
S of Hughes Rd |
2
|
2
|
7,625
|
B
|
10,400
|
E
|
|
88.
|
Ridge Road |
W of Alta |
2
|
2
|
5,339
|
A
|
7,600
|
B
|
|
89.
|
Ridge Road |
E of Rough & Ready Hwy |
2
|
2
|
4,263
|
A
|
11,600
|
F
|
|
56.
|
Sierra College Dr |
SE of Ridge Rd |
2
|
2
|
3,180
|
A
|
7,200
|
B
|
|
103.
|
Taylorville |
S of McKnight |
2
|
2
|
NA
|
NA
|
0
|
A
|
|
104.
|
Taylorville |
S of Crestview/Smith Ext |
2
|
2
|
NA
|
NA
|
3,100
|
A
|
LOS = Level of Service
ADT = Average Daily Traffic
NA = Not Applicable
(2) = Planned Road
- The planned number of lanes for all new roadways in the annexation areas should be adequate to accommodate
projected year 2020 P.M. peak hour traffic flows and provide a Level of Service "D". In these areas,
feasible at-grade improvements were identified for all major intersections.
- As shown in Figure 4-3, a number of existing roadways in the infill areas of the City will require widening
to provide Level of Service "D" operating conditions in the year 2020. Some of these locations are already
deficient, while others will experience increased traffic as a result of future growth. Also, a number of existing
intersections will require improvements.
- A number of existing intersections will require improvements to provide Level of Service "D". As
shown in Table 4-6, implementation of the General Plan Circulation Element and construction of the improvement
projects included in the current General Plan, will result in satisfactory levels of Service at most locations.
TABLE 4-6
YEAR 2020
INTERSECTION LEVELS OF SERVICE
| INTERSECTION |
EXISTING
|
2020
|
|
LOS
|
DEL/
VEH
|
LOS
|
DEL/
VEH
|
V/C
|
|
#381
|
Colfax Hwy/SR 49 Frontage |
|
|
B
|
14.1
|
0.633
|
|
#383
|
Main/Idaho Maryland/SR 49 SB Ramps |
C
|
17.9
|
F
|
129.5
|
1.285
|
|
#384
|
Idaho Maryland/SR 49 EB Ramps |
A/C
|
2.4
|
C
|
17.4
|
0.747
|
|
#385
|
Brunswick/SR 49 NB Ramps |
|
|
B
|
11.5
|
.659
|
|
#386
|
Brunswick/SR 49 SB Ramps |
|
|
C
|
15.2
|
0.394
|
|
#397
|
Idaho Maryland/Centennial |
A/C
|
3.7
|
C
|
6.2
|
|
|
#398
|
Whispering Pines/Centennial |
|
|
C
|
20.3
|
0.512
|
|
#409
|
Bennett/Centennial |
|
|
F
|
9.6
|
|
|
#413
|
Freeman/McCourtney/Mill/Allison |
B
|
7.8
|
C
|
21.5
|
0.633
|
|
#414
|
Mill/SR 20 WB Ramps |
C
|
12.9
|
C
|
16.8
|
0.629
|
|
#415
|
McCourtney/SR 20 EB Ramps |
A/E
|
3.5
|
C
|
17.0
|
0.509
|
|
#454
|
Sierra College/Litton/Robert Ross Way |
F
|
53.2
|
D
|
23.1
|
1.451
|
|
#565
|
SR 49/Crestview |
|
|
C
|
23.5
|
0.930
|
|
#640
|
Main/Bennett/Washington |
|
|
C
|
21.5
|
0.760
|
|
#641
|
Colfax Hwy/Ophir |
|
|
C
|
19.5
|
0.594
|
|
#669
|
Main/Alta |
|
|
C
|
24.1
|
0.793
|
|
#675
|
McKnight/SR 49 SB Ramps |
C
|
22.6
|
C
|
21.0
|
0.773
|
|
#676
|
McKnight/SR 49 NB Ramps |
C
|
19.6
|
C
|
19.6
|
0.729
|
|
#677
|
Empire/SR 20 SB Ramps |
|
|
D
|
36.8
|
1.030
|
|
#678
|
Empire/SR 20 NB Ramps |
|
|
B
|
13.8
|
0.513
|
|
#750
|
Nevada City Hwy/Sierra College |
|
|
C
|
24.3
|
0.691
|
|
#751
|
Nevada City Hwy/Hughes |
|
|
C
|
19.3
|
0.760
|
|
#754
|
|
