Interstate 15 Business (Great Falls, Montana)
I-15 Bus. highlighted in red, unsigned I-315 highlighted in blue | ||||
Route information | ||||
Business route of I-15 | ||||
Maintained by Montana Department of Transportation | ||||
Length | 5.834 mi[citation needed] (9.389 km) | |||
Existed | 1967–present | |||
Major junctions | ||||
South end | ![]() ![]() ![]() ![]() | |||
![]() ![]() ![]() | ||||
North end | ![]() ![]() ![]() | |||
Location | ||||
Country | United States | |||
State | Montana | |||
Counties | Cascade | |||
Highway system | ||||
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Interstate 15 Business (BL 15) is a business loop of Interstate 15 (I-15) in Cascade County, Montana, United States, almost entirely within Great Falls. The route links I-15 (which bypasses downtown Great Falls to the west) with the center of Great Falls. As its business loop designation implies, BL 15 terminates at I-15 (running concurrently with U.S. Route 89 [US 89] and Montana Highway 200 [MT 200] through western Great Falls) at each end. The southernmost 0.83 miles (1.34 km) of the route from the interchange with I-15 to Fox Farm Road is designated, but not signed, as Interstate 315 (I-315).[1] I-315 is the second shortest Interstate in the country; only the unsigned I-878 is shorter.
Route description
BL 15 begins at I-15 exit 278 in an unincorporated area of Cascade County, a short distance southwest of Great Falls. At the trumpet interchange, US 89 and MT 200 separate from I-15 and merge with BL 15. Additionally, MT 3 begins at the interchange and follows the three routes to the east. Just east of the interchange with I-15, BL 15 intersects 14th Street. The Interstate Highway–standard conditions come to an end a short distance to the east at an intersection with Fox Farm Road.[2] Here, the 0.83-mile (1.34 km)[3] I-315 (designated along BL 15 from I-15 to Fox Farm Road) comes to an end[4] while BL 15, US 89, MT 3, and MT 200 continue across the Missouri River into downtown Great Falls.[2]
Within downtown, the four routes remain concurrent along 10th Avenue South to the parallel one-way couplet of 5th and 6th streets. BL 15 northbound separates from US 89/MT 3/MT 200 at 6th Street, following the street northward through the city to the one-way 2nd Avenue North near the city center. BL 15 turns to the west, following 2nd to Park Street, then Park south to Central Avenue, where BL 15 northbound rejoins the routing of BL 15 southbound. Between Central Avenue and 10th Avenue South, BL 15 southbound is routed along 1st Avenue North east to 5th Street South, then 5th South to 10th Avenue.[2]
BL 15 follows Central Avenue to the west, crossing the Missouri River once more as it exits downtown. After several intersections with local streets, BL 15 terminates at I-15 exit 280. Central Avenue, however, continues westward from the exit.[2]
Major intersections
The entire route is in Cascade County.
Location | mi | km | Exit | Destinations | Notes |
---|---|---|---|---|---|
| 0.000 | 0.000 | — | ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | Western end of I-315/US 89/MT 3/MT 200 concurrency; I-15 exit 278 |
Great Falls | 0.335 | 0.539 | 0 | 14th Street Southwest | Interchange |
0.828 | 1.333 | — | ![]() ![]() | Eastern end of I-315 concurrency | |
2.341 | 3.767 | ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | Eastern end of US 89/MT 3/MT 200 concurrency; I-15 Bus. becomes 6th Street South (one-way street) | ||
5.834 | 9.389 | ![]() ![]() ![]() | Northern terminus; I-15 exit 280 | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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See also
References
- ^ "Interstate 315 Montana". Interstate-Guide.com. Retrieved September 24, 2007.[self-published source] (has pictures showing that I-315 is signed as BL 15)
- ^ a b c d Rand McNally (2007). "Montana" (Map). The Road Atlas '07. Chicago: Rand McNally. p. 61. § M16, N16.
- ^ "Interstate System: Table 2". Route Log and Finder List. Federal Highway Administration. Retrieved September 24, 2007.
- ^ Montana Department of Transportation (2001). Great Falls - Cascade County (PDF) (Map). Helena: Montana Department of Transportation. Retrieved September 24, 2007.
External links
Route map:
Media related to Interstate 15 Business (Great Falls, Montana) at Wikimedia Commons
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- Business Interstate Highways
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- Interstate 15
- Transportation in Cascade County, Montana
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