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EspañolU.S. ROUTE 29 IN MARYLAND
'U.S. Route 29' in Maryland emerges from Washington D.C. and runs north into central Montgomery County. It serves the communities of Columbia and Ellicott City and provides the westernmost north-south route between Washington D.C. and Baltimore.
Counties traversed
★ Montgomery County
★ Howard County
Cities and towns
US 29 directly serves the following towns (bolded entries are control cities):
★ Washington D.C.
★ 'Silver Spring
★ White Oak
★ Burtonsville
★ Scaggsville
★ 'Columbia'
★ 'Ellicott City'
★ 'Baltimore' (via I-70)
Route description
Georgia Avenue and Colesville Road
US 29 emerges from D.C. along Georgia Avenue. Running alongside the Jessup Blair Park it intersects MD 410, the East-West Highway, just outside the D.C. border. It then meets the northern terminus of MD 384 and the southern terminus of MD 97 at a four-way intersection in Silver Spring; US 29 subsequently becomes Colesville Rd., taking over from MD 384, while MD 97 continues as Georgia Ave.
Crossing Sligo Creek Park the highway intersects the Sligo Creek Parkway just to the south of Interstate 495 (Capital Beltway); a partial cloverleaf interchange between the highways prevents direct access from US 29 south to I-495 east and I-495 west to US 29 north. Now a divided highway, US 29 continues north, intersecting MD 193 just beyond the Capital Beltway; this highway provides access to I-495 that is not available at the aforementioned interchange.
Columbia Pike
After crossing the Northwest Branch Park the route is now known as 'Columbia Pike' and becomes a four-lane divided expressway. It interchanges with MD 650 to the northwest of the Naval Surface Weapons Center. The route passes through Paint Branch Park, over the Paint Branch, before meeting Randolph Rd. at a recently constructed diamond interchange. Continuing northeast the route intersects Fairland Rd. before meeting Briggs Chaney Rd. at another recently constructed diamond interchange.
Running northwest of Fairland Regional Park US 29 reaches its first major freeway segment at Burtonsville, bypassing a former, heavily curved at-grade expressway portion through the town. The bypass incorporates the southern end of the former alignment and a diamond interchange with MD 198 within its southern endpoint; US 29 continues straight ahead through the combined interchange, meeting the northern end of the former alignment at a partial diamond interchange.
The route crosses the Rocky Gorge Reservoir and enters Howard County just beyond the northern end of the bypass. It intersects Old Columbia Rd. just beyond the reservoir and then upgrades into a six-lane grade-separated almost-freeway within its interchange with MD 216 at Scaggsville. Continuing as an almost-freeway it interchanges with Johns Hopkins Rd. after two miles, then intersects Rivers Edge Rd. at a half-signalled intersection (Rivers Edge Rd. intersects the southbound carriageway, which has the signals; the northbound carriageway has an unsignalled turn lane and an unsignalled acceleration lane, both within the median).
Next, US 29 encounters MD 32 at a symmetrical cloverleaf; for an extended period this interchange marked the southern end of US 29's grade separation, with the entire route south of there being an at-grade expressway. North of the interchange, US 29 intersects several major routes that serve the town of Columbia: Shaker Drive/Seneca Drive, Broken Land Parkway, MD 175, and MD 108. Between Broken Land Parkway and MD 175, US 29 has a right-in/right-out interchange between the southbound carriageway and S Entrance Rd; the northbound carriageway has two at-grade direct turnoffs to Gates Lane and Old Columbia Rd, with median crossovers provided for southbound traffic. Near the MD 108 interchange the northbound carriageway has another direct turnoff to Diamondback Drive.
Beyond the MD 108 interchange, US 29 upgrades again into a fully limited-access six-lane grade-separated freeway as it encounters the western terminus of MD 100. The heavy flows to and from MD 100 result in US 29 widening again to eight lanes within the interchange, which also incorporates a three-quarter diamond interchange with the western terminus of MD 103. The eight-lane segment narrows to six lanes again as it encounters the historic northern end of the US 29 expressway at U.S. Route 40 within Ellicott City.
29th Infantry Division Memorial Highway
The entire route in Maryland is also known as the '29th Infantry Division Memorial Highway', and some trailblazer assemblies in the Ellicott City area are marked with the division's distinctive yin-yang symbol. At the US 40 interchange, a monument dedicating the highway to the division has been installed and can be seen from both carriageways.
Beyond US 40, US 29 interchanges with Interstate 70 at a modified directional cloverleaf, and finally terminates at an at-grade intersection with MD 99 near Mount Hebron.
Points of interest
★ Jessup Blair Park
★ Sligo Creek Park
★ Northwest Branch Park
★ Naval Surface Weapons Center
★ Paint Branch Park
★ Fairland Regional Park
★ Rocky Gorge Reservoir
★ Johns Hopkins University Applied Physics Laboratory
★ The Mall in Columbia
★ Lake Kittamaqundi
★ Centennial Park
★ Historic Ellicott City
★ Montgomery Blair High School
Junction list
| County | Location | Mile | # | Destinations | Notes |
|---|---|---|---|---|---|
 | |||||
| Montgomery | Silver Spring | 0.2 |  | ||
| 0.7 |      | | |||
| 1.4 | Dale Dr. - Nolte Recreation Center | former route of  | |||
| Sligo Creek Park | 1.6 | Sligo Creek Parkway - to  | |||
| Four Corners | 1.7 | Franklin Ave. - to  | former route of  | ||
| 2.3 |    | grade-separated interchange between routes | |||
| 2.6 | | ||||
| 3.8 | Lockwood Dr. north - to | former route of  | |||
| White Oak | 4.6 | | grade-separated interchange between routes | ||
| 6.7 | E Randolph Rd.-Cherry Hill Rd. - Paint Branch Park (to  | new grade-separated interchange between routes; Randolph Rd. connects to former route of  | |||
| Fairland Rd. - Paint Branch Park | |||||
| Briggs Chaney Rd. - Fairland Regional Park (via Robey Rd.) | new grade-separated interchange between routes | ||||
| Greencastle Rd. - Fairland Regional Park | |||||
| Burtonsville | 10.6 |  |  | ||
| Dustin Rd.-Old Columbia Pike south | northern terminus of former alignment of | ||||
| Howard | Old Columbia Rd. - to Harding Rd. | ||||
| Scaggsville | 12.9 | 13 |  | | |
| Hammond Dr. - to Crest Rd. | direct turnoff from northbound carriageway | ||||
| 14.9 | 15 | Johns Hopkins Rd. - Johns Hopkins University Applied Physics Laboratory | |||
| Rivers Edge Rd. | signalled intersection with southbound carriageway; direct turnoff from northbound carriageway | ||||
| 16.6 | 16 |  | |||
| 17.3 | 17 | Seneca Dr.-Shaker Dr. - Atholton Park | |||
| Columbia | 18.3 | 18 | Broken Land Parkway - The Mall in Columbia (to Snowden River Parkway) | ||
| S Entrance Rd. - Lake Kittamaqundi | right-in/right-out interchange with southbound carriageway | ||||
| Gates Lane | direct turnoff from northbound carriageway; median crossover provided for southbound traffic | ||||
| Old Columbia Rd. | |||||
| 20.0 | 20 |   | | ||
| Diamondback Dr. | direct turnoff from northbound carriageway | ||||
| 21.2 | 21 |  | former route of | ||
| Ellicott City | 22.4 | 22 |  | ||
| 22.6 | 23 |  |  | ||
| 24.1 | 24 |  | former end of | ||
| 25.5 | 25 |  | multiple accesses to  | ||
| Mount Hebron | 25.9 |   | northern terminus of | ||
History
In 1933, the Maryland state government and the D.C. government approached AASHO and the Virginia state government about the possible northern extension of US 29 from its original northern terminus in Culpepper, Virginia on US 15. After much deliberation, AASHO and Virginia assented to the modifications, and US 29 was extended from Culpepper along US 15 and US 211 into D.C. and thence into Maryland. [2]
MD 27 and MD 29
US 29 arrived in Maryland in 1934, a year after the initial creation of the Maryland highway numbering scheme. US 29 followed a route initially designated as 'Maryland Route 27', while today's MD 27 was designated as 'Maryland Route 29'. The first MD 27 emerged from Washington D.C. along Colesville Rd., then followed US 29's existing route as far as White Oak, where it turned north along MD 650 and followed its alignment as far as Ashton. At Ashton, MD 27 then turned east along MD 108 and followed its alignment through Clarksville (multiplexing with MD 32 before 1996) until it reached MD 108's current interchange with US 29's current route. Then, MD 27 turned north and followed Columbia Rd., becoming Old Columbia Pike (formerly designated as MD 987) after crossing MD 103 and continuing north until reaching Main St. (old US 40) in old Ellicott City, where it ended.
After US 29's arrival in 1934, MD 27 and MD 29 swapped numbers; today's MD 27 received its current designation and did not physically change, while the original MD 27 was re-designated MD 29, and then immediately ''promoted'' to US 29, thus removing a conflict between the US highway number and the state highway number system, which did not permit duplication between the two systems. US 29 followed MD 29's route all the way into Ellicott City, where it then turned east and multiplexed with US 40 through Catonsville all the way into Baltimore, where it ended at US 1 Monroe St. in southwestern Baltimore. Today, the Baltimore County portion of this multiplexed route is part of MD 144.
U.S. 29 Alternate
On November 11, 1954, the state of Maryland gained AASHO's consent to divert US 29 to a more direct alignment, paralleling the now-defunct MD 196 between MD 650 and MD 198, and then continuing onward to Ellicott City via Scaggsville. [2] Initially, the AASHO Executive Committee, meeting in Seattle, Washington, designated US 29's original route via Ashton as 'U.S. Route 29 Alternate', which would be signed upon the completion of the direct route in late 1955. [2] US 29 Alternate has since vanished, being replaced with a northward extension of MD 650 through Ashton (replacing MD 116 north of Ashton) and an eastward extension of MD 108 as far as MD 175 Waterloo Road (now itself part of MD 108).
The new Columbia Pike
The 1966 expansion of the tiny village of Columbia into a massive planned community under the auspices of the Rouse Company led to the construction of the modern Columbia Pike. It is unclear if US 29 initially followed MD 196 and was then diverted to a new alignment, or if US 29 always followed its existing alignment after the 1954 changes, but by the early 1970s, with the completion of the new Columbia Pike, a four-lane divided at-grade highway, between White Oak and US 40, MD 196 was decommissioned north of Industrial Parkway near White Oak, and became unsigned south of that road. In 1968, the terminus of US 29 was diverted away from Baltimore; it was retracted to US 40 in Ellicott City and then moved north two miles to MD 99, and an interchange similar to the one in place between US 29 and US 40 was built to connect the route with Interstate 70 (then designated 'I-70N'). [2]
U.S. 29 Freeway
Initially, the northernmost 2 miles of US 29 were the only grade-separated limited-access segment of that route in Maryland; however, gradual construction of interchanges south of US 40, starting with Howard County's segment in the late 1980s and continuing to this decade in Montgomery County, has resulted in a full freeway between MD 99/I-70 and MD 108, an almost-freeway between MD 108 and MD 216, and a partially grade-separated expressway between MD 216 and MD 650, with interchanges at Johns Hopkins Rd., and MD 216 completed in the early 2000s. Interchanges were completed in 2004 at MD 198, in 2005 at Randolph Road / Cherry Hill Road, and at Briggs Chaney Road in 2007.
Baltimore Outer Beltway
The four miles of the US 29 freeway between MD 100 and I-70 is part of the Baltimore Outer Beltway. The Outer Beltway was a 3/4 circular beltway designed to provide a route parallel to the Baltimore Beltway. MD 100 represents the major portion that was built; the aforementioned four miles of US 29 is another portion. The Outer Beltway was projected beyond MD 99 to run through Howard and Baltimore Counties and intersect MD 140, Interstate 83, U.S. Route 1, and Interstate 95 before terminating at U.S. Highway 40 northeast of Baltimore.
See also
★ Maryland Route 32
★ Maryland Route 99
★ Maryland Route 100
★ Maryland Route 103
★ U.S. Route 40 in Maryland
References
1. Pruett, Mike. US 29 @ MDRoads.com URL accessed 14:03, 21 January 2007.
2. Federal Highway Administration. U.S. 29 Maryland to Florida URL accessed 15:05, 21 January 2007.
3. Federal Highway Administration. U.S. 29 Maryland to Florida URL accessed 15:05, 21 January 2007.
4. Federal Highway Administration. U.S. 29 Maryland to Florida URL accessed 15:05, 21 January 2007.
5. Federal Highway Administration. U.S. 29 Maryland to Florida URL accessed 15:05, 21 January 2007.
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