Interstate 490 and 670 in Ohio
Ohio Interstate 490
Interstate 490 or I -490 is a short Interstate Highway in the U.S. state of Ohio. The route forms a short east-west link on the south side of downtown Cleveland and is 2.5 miles long.
- EHUACOM: Provides city overview of capital of Ohio, including general information about the state Ohio.
The bridge from I-490 over the Cuyahoga River.
I-490 is primarily a link between Interstate 71 to the west and Interstate 77 to the east and is an extension of Interstate 90 as traffic on I-90 must exit (a TOTSO ). The highway consists largely of a large bridge over the Cuyahoga Valley and has 2×4 lanes. Both interchanges are a stack, but I-490 ends shortly after I-77 at an intersection with 55th Street.
- existingcountries: state overview of Ohio, including geography, history and major cities.
An east-west connection between I-71 and I-271 has been on the plan maps since the early 1960s. This was later renumbered as the future Interstate 290. Presumably a further eastward extension along US 322 eastwards was envisaged, given that I-271 was for some time double-numbered with I-290 between Beachwood and Mayfield Heights.
It was also planned that I-90 would otherwise run through downtown Cleveland, along the north side of downtown on the Cleveland Memorial Shoreway ( OH-2 ). This would extend I-290 to the west for another 3 kilometers. However, the 2-kilometer link between I-90 and OH-2 was never built, so I-90 was routed over the Innerbelt Bridge, with a TOTSO on the I-71 stack. The three-mile stretch, then designated I-290, opened to traffic around 1978 and was the last section of I-90 in Ohio to be opened.
Most concretely, a freeway through Shaker Heights, an expensive suburb of Cleveland. It would run just north of OH-87 (Shaker Boulevard), through a series of parks. However, the projected location through the park resulted in a loss of federal funding and at the same time, the plan was unpopular and was scrapped at the time of the freeway revolts.
There is some uncertainty as to when the section between I-71 and I-77, which consists largely of a bridge over the Cuyahoga River, was constructed. It is stated that this section was opened to traffic on September 11, 1990 but Ohio Department of Transportation state highway maps suggest that this highway was opened as early as 1979. The planned number I-290 disappeared from the maps around 1977.
|exit||55th Street||4 km||11-09-1990|
Every day, 67,000 vehicles use I-490.
Interstate 670 in Ohio
Interstate 670 or I -670 is an Interstate Highway in the U.S. state of Ohio. The highway forms an east-west route in the city of Columbus and is 17 kilometers long. The highway runs from I-70 to the I-270 ring road.
I-670 in Columbus.
Just west of downtown, I-670 branches off from Interstate 70, the highway from Indianapolis and Dayton. I-670 has direct 2×4 lanes and intersects with SR-315, a north-south highway in Columbus. The highway then deepens with 2×4 lanes along downtown and then intersects with Interstate 71, the highway to Cleveland. East of downtown, 2×3 lanes are available and the highway connects to Columbus Airport. There, the highway ends at Interstate 270, Columbus ‘ beltway.
Opened circa 1964, the portion along the north side of Downtown Columbus was for some time part of Interstate 71, which came from the south, made a sharp turn over the Olentangy River, passed the north side of Columbus, and made a sharp turn to the north, via what is now the southern portion of the I-71/670 interchange.
Part of I-670 between Columbus and Gahanna has its origin in US 62, which was already expanded with 2×2 lanes. I-670 was laid right over this between Nelson Avenue and where it would later become the interchange with I-270. In 1965, this section was the first to appear on ODOT’s maps as a freeway, but not yet with the number I-670. Also the former part of I-71 along the north side of the center was not yet numbered as I-670, but appeared on maps as I-71 until at least 1977.
In the 1960s, I-70 on the northwest side of Downtown Columbus was planned to connect to I-71 at the Spring-Sandusky Interchange, where today I-670 and OH-315 converge. However, in 1965, this cramped interchange was deemed unsuitable for through east-west traffic and I-70 was built south to downtown Columbus.
In 1973, I-70 opened to the west of Columbus, including a one- mile spur to Grandview Avenue. This was the last section of the highway to be built for a while, in the 1970s the money for road projects ran out and there were still two missing links, a section 3 kilometers west of the center and a section more than 4 kilometers east of the center. The eastern section was opened to traffic in 1993, allowing access to Columbus Airport from the center by freeway.
The part west of the center was built even later. The missing section between Grandview Avenue and OH-315 was opened on June 17, 2002. This allowed the highway to continue on, but the Spring-Sandusky Interchange was still under reconstruction at that time, which was completed on September 19, 2003. This significantly shifted the east-west traffic flow from the original interchange, with 1.2 kilometers of new main carriageway.
The number I-670 was assigned in 1975 by the FHWA. At the time it was an incomplete route. The formal adoption of I-670 by the AASHTO followed in 2004.
A variable speed limit on I-670 was introduced in 2018-2019, and a rush – hour lane was also realized on I-670, the first rush-hour lane in Ohio. The rush-hour lane is also called a ‘SmartLane’ and opened to traffic on October 23, 2019.
|Exit 2B OH-315||Exit 5||4 km||circa 1964|
|Exit 7 5th Avenue||Exit 10||5 km||circa 1965|
|Exit 0||Exit 1B Grandview Avenue||2 km||circa 1973|
|Exit 5||Exit 7 5th Avenue||4 km||00-00-1993|
|Exit 1B Grandview Avenue||Exit 2B OH-315||2 km||17-06-2002|
|Exit 0 I-70||Exit 2B SR-315||2×3||3 km|
|Exit 2B SR-315||Exit 5 I-71||2×4||4 km|
|Exit 5 I-71||Exit 10 I-270||2×3||8 km|
The highway is not extremely busy considering its capacity. After I-70, there are about 70,000 vehicles in 2×4 lanes, peaking at 137,000 vehicles near downtown. East of the center, 99,000 vehicles drive on 2×3 lanes. All this causes little congestion.