Claudelands Bridge

Claudelands Bridge is a dual-lane truss road bridge over the Waikato River, joining Claudelands with Hamilton Central. In 1968 it was converted from the old railway bridge,[3] which had been completed about the end of July 1883.[4] The road bridge was given a Category 2 listing in 1985.[5]

Claudelands Bridge
Claudelands rail and road bridges.
Coordinates37.784418°S 175.283432°E / -37.784418; 175.283432
Carries2 lanes of Claudelands Rd
CrossesWaikato River
LocaleHamilton, New Zealand
Maintained byHamilton City Council
Preceded byVictoria Bridge, Hamilton
Followed byWhitiora Bridge
Characteristics
DesignWarren truss
MaterialSteel
Total length436 feet (133 m)
Height103 feet (31 m) river bed to road
Longest span132 feet (40 m)
No. of spans5
Piers in water2 x 3 (until 1906 2 x 2)
Clearance below82 feet (25 m)
History
DesignerOffice of John Blackett
Construction start1880
Opened1883 rail bridge, converted to road 1968
Statistics
Daily traffic2010 11900
2011 11400
2012 11000
2013 10800
2014 11900
2015 11600[1]
2018 11,200[2]
Designated5 September 1985
Reference no.4201

Around 11,000 vehicles a day use the bridge.[6] The bridge is the second busiest CBD route for cyclists, with 135 in peak hours in 2009 and a rising trend.[7] To make the bridge safer for the 600 cyclists a day, sharrows are being added to the lane markings in 2019.[8] Buses to Rototuna and route 11 cross the bridge.[9]

A new railway bridge, opened on 19 September 1964,[10] a few metres downstream, replaced the old with a 7-span, 143 m (469 ft) pre-stressed concrete box girder bridge. The spans are supported by reinforced concrete piers, resting on in-situ cast piles. The bridge, built by Wilkinson and Davies Construction Co Ltd[11] (involved in a 1959 contract law case and deregistered in 1967),[12] is about 20 ft (6.1 m) lower than the road bridge,[10] being 18 m (59 ft) above the normal river level. It was the first bridge in the country to be stressed with a 100-ton Freyssinet cable.[11]

Old railway bridge history
New railway bridge at a lower level

The bridge was designed in 1880 and the £5,519 contract let on 3 November 1881 to W. Sims.[13] Although Sir George Grey turned the first sod of the railway extension at Claudelands in 1879,[14] there seems to have been little publicity for that or the bridge, with only minimal mention in 1883.[15] Ironwork for the bridge was reported as shipped in 1881.[16]

Progress was very slow,[4] so the contract was re-let to J. R. Stone on 18 September 1882 for £4,312 13s 6d, plus the £1,376 cost (the £5,688 total would now be equivalent to just under $1m)[17] of the four cast cylinders from A & G Price. However, work stopped in November 1882, when it was realised the foundations were inadequate, requiring bracing of the cylinders and deepening of the foundations from 3 to 24 ft (7.3 m).[18] The bridge was completed about the end of July 1883, but not used until the Hamilton-Morrinsville railway opened on 1 October 1884.[13]

It was originally tested with a 117-ton load. To cope with greater loads, an extra cylinder was added to the original two on each side of the main channel, the 2 new cylinders being ordered from S Luke & Co for £2,354 in 1906, and the new deck from A & T Burt Ltd for £5,872 in 1907. Further strengthening was designed in 1934 to cope with the 135-ton K-Class locomotives.[13]

There was pressure for a footbridge from before the railway was opened,[19] A commission was appointed to investigate in 1906.[20] With the widening and strengthening of the bridge, it was possible to build a footbridge in 1908,[21] though there were complaints about the lack of lighting[22] and cycling was banned.[23] The footbridge was renewed in 1936.[24]

There was soon also pressure to remove the railway from the centre of the CBD. In 1912 the Borough Council suggested the line could be lowered. A 1938 plan was stopped by war in 1939. The National Roads Board then promoted it and, in September 1959, the Ministry of Works started the scheme to put the railway in a tunnel and replace the old bridge with one at the tunnel level.[10]

Claudelands Bridge construction about 1882

Utilities

From 1970 to 1974 33kV cables were laid across the bridge. Further wiring was done in 1988.[25]

gollark: allegedly.
gollark: Yes, wojbie, that's actual live code (with some bits removed to make it fit), not an example.
gollark: No evil "class" stuff needed.
gollark: This is an API I run to do some random things.
gollark: ```python#!/usr/bin/env python3from flask import Flask, jsonifyfrom wsgiref.simple_server import make_serverimport subprocessimport randomfrom mpd import MPDClientimport threadingimport timempd_client = MPDClient()mpd_client.connect("localhost", 6600)print("connected, mpd is", mpd_client.mpd_version)app = Flask(__name__)@app.route("/")def index(): return "Hello, World!"@app.route("/fortune/")def fortune(): return subprocess.run(["fortune"], stdout=subprocess.PIPE).stdoutcurrent_song = Nonedef mpd_loop(): print("mpd query loop started") while True: global current_song current_song = mpd_client.currentsong() current_song["status"] = mpd_client.status() time.sleep(0.2)threading.Thread(target=mpd_loop).start()@app.route("/current-song")def get_current_song(): return jsonify(current_song)with make_server('', 1337, app) as httpd: print("Serving HTTP...") httpd.serve_forever()```

References
  1. Abley Traffic Counts
  2. Traffic Flow Map 2018
  3. "Bridges – Hamilton City Council". www.hamilton.govt.nz. Retrieved 18 August 2016.
  4. Zealand, National Library of New. "PUBLIC WORKS STATEMENT, BY THE MINISTER FOR PUBLIC WORKS, THE HON. WALTER WOODS JOHNSTON, 3rd JULY, 1883. (Appendix to the Journals of the House of Representatives, 1883-01-01)". paperspast.natlib.govt.nz. p. 35. Retrieved 18 August 2016.
  5. "Railway Bridge (Former): Heritage New Zealand". www.heritage.org.nz. Retrieved 18 August 2016.
  6. "Hamilton City Council Traffic Counting Data 2011–2015" (PDF). www.hamilton.govt.nz. Archived from the original (PDF) on 19 August 2016. Retrieved 18 August 2016.
  7. "INFORMATION REQUEST REPORTS – CYCLE COUNT NUMBERS HAMILTON CITY COUNCIL" (PDF). www.hamilton.govt.nz. 2015. Archived from the original (PDF) on 19 August 2016. Retrieved 18 August 2016.
  8. "Claudelands Bridge - Hamilton City Council". www.hamilton.govt.nz. Retrieved 16 July 2019.
  9. "Hamilton routes map" (PDF). Busit!. 2014.
  10. "Hamilton's Underground Railway". Kete Hamilton. Archived from the original on 13 October 2016.
  11. "IPENZ Engineering Heritage: Hamilton Rail Bridge". www.ipenz.org.nz. Retrieved 18 August 2016.
  12. "All companies in WILKINS AND DAVIES CONSTRUCTION LTD FISHER INTERNATIONAL BUILDING 18 WATERLOO QUADRANT%2C AUCKLAND | COYS". coys.co.nz. Retrieved 18 August 2016.
  13. "Historical notes on Hamilton Railway Bridge". nzetc.victoria.ac.nz. Retrieved 18 August 2016.
  14. Zealand, National Library of New. "NORTH ISLAND TRUNK RAILWAY. (New Zealand Herald, 1885-04-16)". paperspast.natlib.govt.nz. Retrieved 18 August 2016.
  15. Zealand, National Library of New. "The Waikato Times AND THAMES VALLEY GAZETTE. (Waikato Times, 1883-06-02)". paperspast.natlib.govt.nz. Retrieved 18 August 2016.
  16. Zealand, National Library of New. "THE PUBLIC WORKS STATEMENT. (New Zealand Herald, 1881-08-10)". paperspast.natlib.govt.nz. Retrieved 20 August 2016.
  17. "Inflation calculator – Reserve Bank of New Zealand". www.rbnz.govt.nz. Retrieved 18 August 2016.
  18. "WAIKATO DISTRICT NEWS. (New Zealand Herald, 1882-11-29)". paperspast.natlib.govt.nz National Library of New Zealand. Retrieved 11 May 2017.
  19. Zealand, National Library of New. "WAIKATO WHISPERINGS (Observer, 1883-05-05)". paperspast.natlib.govt.nz. Retrieved 18 August 2016.
  20. Zealand, National Library of New. "CLAUDELANDS FOOT BRIDGE COMMISSION. (Waikato Times, 1906-03-23)". paperspast.natlib.govt.nz. Retrieved 18 August 2016.
  21. Zealand, National Library of New. "Claudelands Footbridge. (Waikato Argus, 1908-12-07)". paperspast.natlib.govt.nz. Retrieved 18 August 2016.
  22. Zealand, National Library of New. "CLAUDELANDS' AFFAIRS. (Waikato Argus, 1909-04-26)". paperspast.natlib.govt.nz. Retrieved 18 August 2016.
  23. Zealand, National Library of New. "CLAUDELANDS BRIDGE. (New Zealand Herald, 1928-08-07)". paperspast.natlib.govt.nz. Retrieved 18 August 2016.
  24. Zealand, National Library of New. "FOOT-WAY ON HAMILTON RAILWAY BRIDGE BEING REPLACED Welded steel sections being placed in position beside the railway track on the bridge over the Waikato River at Hamilton. The work is being carried out on Sunday when the foot-bridge is closed. (New Zealand Herald, 1936-04-02)". paperspast.natlib.govt.nz. Retrieved 18 August 2016.
  25. Gilson, Chris (2005). Wiring up the Waikato. WEL Networks.

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