KEY TO MAP |
PROJECT LOCATION |
KEY FEATURE/S | NUMBER OF LANES | NAMES OF ALL NEW/ UPGRADED INTERCHANGES |
|
---|---|---|---|---|---|
Existing | Upgraded* | ||||
G | Key Ridge / Hammarsdale |
The existing N3 between Key Ridge and Cliffdale has steep grades and tight horizontal curves. These, coupled with the presence of the Peacevale Interchange, contribute to a high crash rate within this section of the N3. The upgrade project allows for a ±1,7km realignment of the N3 to reduce the steep grades and remove the tight curves, ultimately resulting in improved traffic operation and road user safety. | 3 | 5 | - |
H | Cato Ridge / Dardanelles |
The existing horizontal and vertical alignment is substandard in places, and misty conditions make for unsafe driving. Two additional lanes will be added per carriageway. The horizontal and vertical alignment will be improved and street lighting will be included to improve safety. | 2 | 4 | - |
I | Dardanelles / Lynnfield Park |
Two additional lanes on each carriageway will be added, as well as an additional climbing lane on the southbound carriageway. Due to the proximity of the rail line, the R103 and the R603, the upgraded Dardanelles Interchange will have an unusual layout with long loop ramps on the western side of the N3. | 2 | 5 |
|
J | Lynnfield Park / Ashburton |
The R103 within the Lynnfield Park Interchange will have one additional lane in each direction and will feature dedicated right turns. | ** NB 2 ** SB 3 |
** NB 4 ** SB 5 |
|
K | Ashburton Interchange / Murray Rd |
The Ashburton Interchange includes unique loop on and offramps and is between two high rock cuttings. | 2 | 5 |
|
L | Murray Rd / New England Rd |
The project features a diverging diamond interchange at the Market Road Interchange, which is still a fairly new concept in South Africa. A network arch bridge is also featured at the Blackburrow overpass. This project also includes a Collective Distributor (CD) road between Epworth Interchange and Market Road Interchange. The CD concept allows for the two interchanges to act as one due to their close proximity. | 2 | 5 |
|
M | New England Rd / Twickenham Rd |
A new CD road will be added parallel to the N3 from the Blackburrow Road overpass bridge to Armitage Road Interchange to prevent local traffic congesting the N3. The New England Road Interchange will be reconfigured to a diverging diamond interchange. The Russom Street Railway Bridge will be replaced. | 2 | 3 |
|
*While this is the maximum number of lanes for the respective section, it does not necessarily mean this will be consistent through the entire section.
** NB=Northbound; SB=Southbound