It is a yes and a no. Machakos-Nairobi-Nakuru highway has a greater impact since it is part of the northern corridor. All goods destined on transit & for export to Ug, Rwanda and Congo use this highway. But at the moment it does need much attention for the time being as compared to during Kanu regime (was recently recarpeted). The No is; Thika Rd needed attention since Nairobi population is moving away from the city centre. Thika Rd has rapidly mushrooming residential estates & massive expansion ie Kasarani, Zimmerman, Kahawa, Githurai etc. Thika Rd is the major highway being fed by roads frm all this estates not forgetting traffic from further on, as Muranga, Meru, Garissa, etc. My two cent opinion is: Machakos-Nairobi-Nakuru highway should have been expanded the same way as Thika Rd since we are heading to a massive traffic jam in that direction.

Statistically, Nairobi Thika apparently (pre highway) has the highest concentration of vehicles in East and Central Africa (can't remember where I read that from).

I agree though that Machakos - Nakuru could have greater impact. However most of it is technically in place. Msa road after Nyayo stadium onwards to Machakos will be a 2+2 soon enough. Traffic reduces also after Athi. The other way, dual carriageway till Limuru is in place. Would be nice to have a longer stretch of 2+2 traffic (reducing accidents).

The real bottleneck is within Nairobi, and I think this will still affect the Nairobi - Thika highway.

Thika Road was dualised more than 25years ago upto Kenol. Machakos turn-off to Arthi is still uncertain. Arthi to City has just been done.

Lastly Southern bypass - Msa Road to Kikuyu should have been given priority over Northern or Eastern Bypasses which are almost complete. The transit trucks would not be clogging Uhuru and Waiyaki Ways.

The technology city at machakos calls for world class highway,..i will try rao next year.

@nostop, which part of the constitution says counties will do roads?

I agree with Simonkabz, main problem is the 7 roundabouts between Nyayo and Westlands. Dualing the rest of the road from Mombasa to Kisumu is not a priority. While at it, do this southern bypass ASAP. I feel for Syokimau/Mlolongo/Athiriver/Kitengela residents - no hope until 2016 or thereabouts - assuming work starts next year.

Let's just agree that Thika Rd project was long overdue, without the ethnic sentiments (came when Kibs yuko) thus the negative sentiments it's attracting. True it serves the whole of Eastern, NEP and Central. But if the 7 roundabouts were taken care of Jana, we wouldn't be complaining. Ama?

If you are going to Ruiru and beyond, it has for some years now become customary to avoid the section between Muthaiga and Ruiru because of the traffic to Ruaraka, Zimmerman, Mwiki, Githurai and Kahawa. A journey to Thika take at least an hour and half on a good day instead of 30 minutes and 3 hrs on a public holiday. People bypass this section by going through Kiambu or using the eastern bypass. The traffic on this road is impossible.

@2012. This is very true. I operate from Mlolongo area & live in Mountainview and mostly the traffic is btw those said place. I'd bet my last cent if those bypasses are complete, we would experience less traffic on Msa Rd. esp of those aagghh! transit trucks

Kenyan Oracle, i would tend to agree with you except you left out an important aspect. That is unplanned buildings / estaes coming up.Looking at kile/kilimani even the super high way will not help the intended purpose unless we start thinking about urban planning.