Bridge at Ngr Tl 3449 1373 is a Grade II listed building in the East Hertfordshire local planning authority area, England. Bridge.

Bridge at Ngr Tl 3449 1373

WRENN ID
late-joist-hazel
Grade
II
Local Planning Authority
East Hertfordshire
Constituency
Hertford and Stortford MP: Josh Dean (Lab)
Country
England
Type
Bridge
Address
Bridge at Ngr Tl 3449 1373, Hertford
OS grid reference
TL 344 137
Coordinates
51.80606, -0.05076
Source
Historic England listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The bridge, built around 1837, spans the improved Hertford cut of the New River. It features ten curved cast-iron arch girders set closely together, with pierced spandrels and an ornamental keystone. The arch has a convex chordal profile and an approximate span of 5 meters, supported by concave curved abutments made of yellow-brown stock bricks laid in English bond. The outer arches and abutments are topped with cast-iron and wrought-iron post and rail handrails.

Historically, the New River was constructed between 1608 and 1613 by Sir Hugh Myddelton to supply water to London, originating from Chadwell Spring, located between Ware and Hertford. By the early 18th century, the water supply had become insufficient. In 1739, a new Act permitted water to be drawn from the River Lea near Hertford, regulated by gauges designed by Robert Mylne. The River Lee Act of 1855 granted the New River Company the right to take all of the Lea's water, except what was needed for navigation. This led to the creation of an improved cut across the King's Meads and the construction of a new Gauge House in 1856, designed by William Chadwell Mylne.

Local climate

Bridge at Ngr Tl 3449 1373 sits in a drier-than-average part of the UK, with an average of 710 mm of rain a year. This makes it drier than 88% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 84% of listed buildings.

It experiences an average of 33 freeze-thaw cycles a year, fewer than 55% of listed buildings. Of these, 16 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

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Nearby listed buildings

  1. Bridge at Ngr Tl 3451 1372 Grade II 22 m
  2. Bridge Over New River on the Meads at Tl 3481 1390 Grade II 368 m
  3. Marker Stone at Lea Cut on the Meads at Tl 3485 1383 Grade II 390 m
  4. Bridge at Ngr Tl 3410 1355 Grade II 428 m
  5. Bridge at Ngr Tl 3413 1349 Grade II 430 m
  6. New River Company Property Markers in Os Fields 41 and 44 Grade II 458 m
  7. New River, Gauge Enclosure and Railings on the Meads at Tl 3494 1382 Grade II 470 m
  8. Commemorative Stone at Chadwell Spring, The Meads at Tl 3497 1368 Grade II 494 m
  9. Gauge House at the River Lee at Ngr Tl 3399 1381 Grade II 496 m
  10. New River Company Property Markers in Os Field 44 Grade II 596 m