Hertfordshire Council

Hertfordshire County Council is the Highway Authority for all roads in the Administrative County of Hertfordshire, with the exception of Trunk roads managed by National Highways.

The vast majority of the council area falls within the historic county of Hertfordshire, although the Potters Bar area is within Middlesex.

Highways Management

In 2013, Hertfordshire managed over 5,100km in total section length, comprising:

• 711 km of A Roads
• 330 km of B Roads
• 830 km of C Roads
• 3231 km of Unclassified Roads

De-trunked roads consisting of 213km of carriageway make up 30% of the total A road network in the county, with some of these A roads carrying up to 60,000 vehicles per day.

Primary Destinations

The following Primary Destinations are located within the council area:

• Hemel Hempstead
• Hertford
• St Albans
• Stevenage
• Watford

Trunk Roads

The following roads that run through the council area are at least partially Trunk Roads, and therefore managed by National Highways:

• M1
• M25
• A1(M)
• A1
• A5
• A405
• A414

Principal and Classified Numbered Roads

The following is a list of A and B classified roads that are at least partially managed by the council:

Route	From	To	Length
A10	Monument, London	Hardwick Roundabout, King's Lynn	99.7 miles	View
A41	London	Birkenhead	204 miles	View
A111	Palmers Green	Potters Bar	6.8 miles	View
A119	Ware	Watton at Stone	7.4 miles	View
A120	Puckeridge	Harwich	63.7 miles	View
A121	Waltham Cross	Woodford Wells	10.0 miles	View
A404	Marylebone, London	Maidenhead	43.5 miles	View
A405	Leavesden Green	Park Street	4.8 miles	View
A409	Harrow	Bushey Heath	4.7 miles	View
A411	Barnet	Hunton Bridge	13.8 miles	View
A412	Slough	Garston, Watford	18.9 miles	View
A414	Apsley, Hemel Hempstead	Maldon	66.9 miles	View
A416	Amersham	Berkhamsted	8.1 miles	View
A505	Leighton Buzzard	Great Abington	49.2 miles	View
A507	Brogborough	Buntingford	31.4 miles	View
A600	Hitchin	Bedford	18.2 miles	View
A602	Hitchin	Ware	15.6 miles	View
A1000	East Finchley, London	Welwyn Garden City	21.0 miles	View
A1001	Millward's Park	Oldings Corner	4.1 miles	View
A1005	World's End	Potters Bar	3.9 miles	View
A1010	Bruce Grove, Tottenham	Waltham Cross	7.0 miles	View
A1057	Hatfield	St Albans	4.2 miles	View
A1060	Bishop's Stortford	Sandon, Chelmsford	21.5 miles	View
A1070	Horizon Technology Park	Stevenage Town Centre	0.3 miles	View
A1072	Broadhall Way	Verity Way	4.0 miles	View
A1081	High Barnet	Luton Airport	20.5 miles	View
A1155	Gunnels Wood Road	Martins Way	2.5 miles	View
A1170	Ware By Pass	Turnford	8.5 miles	View
A1184	Harlow	Bishop's Stortford By Pass	6.9 miles	View
A1250	Stortford Park	Birchanger Green	3.0 miles	View
A4008	Watford East	Hatch End, Harrow	5.5 miles	View
A4125	Northwood, London	Watford	3.9 miles	View
A4140	Brent	Bushey Heath	6.3 miles	View
A4145	Batchworth	Watford	4.6 miles	View
A4146	Hemel Hempstead	Milton Keynes	16.7 miles	View
A4147	Hemel Hempstead	St Albans	8.3 miles	View
A4178	Oxhey	Watford	1.2 miles	View
A4251	Kings Langley	Wigginton	12.1 miles	View
A5135	Rowley Green	Elstree Studios	1.2 miles	View
A5183	Elstree	Dunstable	21.8 miles	View
A6129	Hatfield (N)	Welwyn Garden City	1.5 miles	View
B156	Potters Bar	Turnford	7.4 miles	View
B157	Brookmans Park	Cuffley	3.3 miles	View
B158	Brookmans Park	Tonwell	10.9 miles	View
B176	Waltham Cross	Turnford	2.7 miles	View
B180	Stanstead Abbotts	Widford	3.7 miles	View
B181	Great Amwell	North Weald Bassett	13.6 miles	View
B194	Waltham Abbey	Broxbourne	6.0 miles	View
B195	Cole Green	Lemsford	4.4 miles	View
B197	Hatfield House	Baldock	19.0 miles	View
B198	Goff's Lane, Cheshunt	Turner's Hill, Cheshunt	1.8 miles	View
B440	Hemel Hempstead	Leighton Buzzard	12.4 miles	View
B462	Radlett	Oxhey	4.1 miles	View
B486	Tring town centre	Tring Wharf	0.89 miles	View
B487	Hemel Hempstead	Harpenden Common	5.9 miles	View
B488	Tring	Linslade	9.9 miles	View
B489	Buckland	Dunstable	10.6 miles	View
B556	Potters Bar	Radlett	7.5 miles	View
B651	St Albans	Rush Green	12.3 miles	View
B652	Harpenden	Kimpton	4.7 miles	View
B653	Luton	Stanborough	10.7 miles	View
B655	Barton-le-Clay	Hitchin	7.5 miles	View
B656	Welwyn	Pixmore Way, Baldock	15.5 miles	View
B691	Chequer Street	Hatfield Road	0.7 miles	View
B1000	Welwyn Garden City	Hertford	4.3 miles	View
B1001	Ware bypass	Ware town centre	0.7 miles	View
B1004	Bishop's Stortford	Ware	13.1 miles	View
B1037	Pin Green, Stevenage	Cottered	5.5 miles	View
B1038	Buntingford	Newport	11.7 miles	View
B1039	Royston	Wendens Ambo	11.2 miles	View
B1197	Hoddesdon	Hertford	3.1 miles	View
B1368	Puckeridge	Hauxton	19.6 miles	View
B1383	Bishop's Stortford	Stump Cross	17.5 miles	View
B1455	Holwell Caravan Site	Essendon	0.5 miles	View
B1502	Hertford	Great Amwell	2.4 miles	View
B1529	London Road	Hadham Road	1.0 mile	View
B4505	Chesham	Boxmoor	6.5 miles	View
B4506	Northchurch	Whipsnade	7.3 miles	View
B4540	Whipsnade (W)	Luton	7.8 miles	View
B4542	Eastbury	The Rookery	3.5 miles	View
B4630	Noke roundabout, Chiswell Green	St Stephen's, St Albans	1.6 miles	View
B4635	Bucklandwharf	Tring(SE)	2.0 miles	View
B5378	Elstree	London Colney	7.2 miles	View
B6424	London Road	Victoria Street	0.21 miles	View
B6426	The Comet Roundabout, Hatfield	Great North Road, Hatfield	1.6 miles	View

Classified Unnumbered (Class III) Roads

Main Article: Hertfordshire Council (Class III roads)

For its Class III road network, Hertfordshire County Council uses "C" prefixes.

Junctions

The local authority is responsible for the maintenance of the majority of junctions within its boundary.

Main Article: Hertfordshire Council (Junctions)

Bridges, Tunnels, and other Crossings

Main Article: Hertfordshire Council (Crossings)

Videos

Hatfield Tunnel - Concept to Reality

Watch the Hatfield Tunnel being built in this fascinating documentary produced jointly by the University of Herts, formerly Hatfield Polytechnic and Hertfordshire County Council.

Watch video > >

A602 Improvements - drive through

Have a look at what we've been doing to reduce rush hour queues on the A602 between Stevenage and Ware

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Little Hadham Bypass - Drone Footage of Construction (October 2019)

Aerial video of the construction site for the Little Hadham Bypass and Flood Alleviation Scheme, shot by the scheme's survey drone

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Little Hadham Bypass - Timelapse (September 2019)

Construction work on the A120 Little Hadham Bypass and Flood Alleviation Scheme is now well underway. Here's some of what's been happening on site over the last month or so.

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New River Bridge named Claire Bayless Bridge

The Claire Bayless Bridge and the Debbie Pezzani Footbridge were officially named at a special event on 27 September 2021 in Hoddesdon.

Watch video > >

Links

• Hertfordshire Council
• 2013 Asset Management Plan and Performance Report