# John Job Crew Bradfield collection

**Source**: https://digital.library.sydney.edu.au/nodes/view/15074
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15074
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# John Job Crew Bradfield collection

Details

Collection Description

This collection contains images and text that document the early construction of roads, highways and bridges across Australia from the late 19th century through to the mid-20th century. \
\
The materials were created by Dr. J.J.C. Bradfield, most famously known for the design and construction of the iconic Sydney Harbour Bridge. He also contributed to a great many engineering projects in Australia, including the Cataract and Burrinjuck dams, a transit network plan for suburban Sydney and the Story Bridge in Brisbane. \
\
John Job Crew Bradfield (1867-1943) attended the University of Sydney, graduating with a Bachelor of Engineering in 1889 and awarded the University Gold Medal. In 1924, Bradfield was awarded the first-ever Doctorate of Science in Engineering by the University of Sydney for his thesis '[The City and Suburban Electric Railways and the Sydney Harbour Bridge'](https://ses.library.usyd.edu.au/handle/2123/11968).

Collection SummaryThe materials were created by Dr. J.J.C. Bradfield, the first University of Sydney PhD in Engineering. He is known for the design and construction of the iconic Sydney Harbour Bridge.

\
\
\
\

Image

[\

Sydney Harbour Bridge Pylons plan](https://digital.library.sydney.edu.au/nodes/view/15445)

[\

Sydney Harbour Bridge elevation plan](https://digital.library.sydney.edu.au/nodes/view/15194)

[\

Sydney Harbour Bridge photographs, 1887-1931.](https://digital.library.sydney.edu.au/nodes/view/15169)

[\

Roads and bridges of Western Australia](https://digital.library.sydney.edu.au/nodes/view/14873)

[\

Roads and bridges of Tasmania](https://digital.library.sydney.edu.au/nodes/view/14872)

[\

Roads and bridges of Queensland](https://digital.library.sydney.edu.au/nodes/view/14871)

[\

Roads and bridges of South Australia](https://digital.library.sydney.edu.au/nodes/view/14870)

[\

Roads and bridges of Victoria](https://digital.library.sydney.edu.au/nodes/view/14869)

[\

Railway bridges of New South Wales](https://digital.library.sydney.edu.au/nodes/view/14868)

[\

Highway bridges of New South Wales](https://digital.library.sydney.edu.au/nodes/view/14867)

[\

Road construction in New South Wales](https://digital.library.sydney.edu.au/nodes/view/14866)

[\

Institution of Civil Engineers, N.S.W.: Interstate Gathering 7: Photographs of Burrinjuck Dam, Cataract Dam and Yanco Irrigation Area](https://digital.library.sydney.edu.au/nodes/view/14865)

[\

Institution of Civil Engineers, N.S.W.: Interstate Gathering 6: Government Dockyard, Walsh Island, Newcastle](https://digital.library.sydney.edu.au/nodes/view/14864)

[\

Institution of Civil Engineers, N.S.W.: Interstate Gathering 5: Photographs of Newcastle Steel Works](https://digital.library.sydney.edu.au/nodes/view/14863)

[\

Institution of Civil Engineers, N.S.W.: Interstate Gathering 4: Photographs of works visited around Sydney Harbour](https://digital.library.sydney.edu.au/nodes/view/14862)

[\

Institution of Civil Engineers, N.S.W.: Interstate Gathering 3: Photographs accompanying lecture by A. Peake Esq.](https://digital.library.sydney.edu.au/nodes/view/14861)

[\

Institution of Civil Engineers, N.S.W.: Interstate Gathering 2: Photographs accompanying lecture by Jas. Fraser Esq.](https://digital.library.sydney.edu.au/nodes/view/14860)

[\

Institution of Civil Engineers: Interstate Gathering 1: Programme](https://digital.library.sydney.edu.au/nodes/view/14859)

[\

Sydney Harbour Bridge and city railway construction, Volume 1](https://digital.library.sydney.edu.au/nodes/view/7672)

[\

Sydney Harbour Bridge and city railway construction, Volume 2](https://digital.library.sydney.edu.au/nodes/view/7674)

[\

Sydney Harbour Bridge and city railway construction, Volume 3](https://digital.library.sydney.edu.au/nodes/view/7677)

*John Job Crew Bradfield collection*. University of Sydney Library, accessed 10/03/2026, https://digital.library.sydney.edu.au/nodes/view/15074

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if (!$el) return;
//small helpers
const getNewObj = (k, v) => {
return {
[k]: v
}
};
const parseReq = (str) => str.replace("?", "&").split("&").map(e => e.split("=")).filter(e => e[0] != "").map(e => getNewObj(e[0], e[1]));
const getValue = (obj) => Object.values(obj);
//encode array of the elements
var encoding = function(str) {
var result;
try {
result = btoa(unescape(encodeURIComponent(str)));
} catch (e) {
console.error("Error on ENCODING FUNCTION." + e);
}
return result;
}
//decode string
var decoding = function(str) {
var result;
try {
result = decodeURIComponent(escape(atob(decodeURIComponent(str))));
} catch (e) {
console.error("Error on DECODING FUNCTION." + e);
}
return result;
}
//parse string
var jsonParse = function(param) {
var result;
try {
result = JSON.parse(param);
} catch (e) {
console.error("Error on JSON PARSE FUNCTION." + e);
}
return result;
}
//XSS protection
var encodingHtmlEntities = function(str) {
return String(str).replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;'); //.replace(/&/g, '&amp;')
}
//get localStorageKey from URL
const localStorageKey = parseReq(window.location.search).filter(e => Object.keys(e) == "lsk");
const otherKeys = parseReq(window.location.search).filter(e => Object.keys(e) != "lsk");
let searchParam = "";
otherKeys.forEach(e => {
searchParam += "&" + Object.keys(e) + "=" + Object.values(e);
});
//if don't have a key in URL break function
if ((localStorageKey && localStorageKey.length === 0)) return;
//get key from string
const KEY = localStorageKey[0].lsk;
//this key doesn't have a data break function
if (!window.localStorage.getItem(KEY) && !window.sessionStorage.getItem(KEY)) return;
var cleanLocalStorage = function() {
for (let key in window.sessionStorage) {
if ((key != KEY) && (key != "\_" + KEY)) {
window.sessionStorage.removeItem(key);
}
}
}
if (Object.keys(window.sessionStorage).length > 1) {
cleanLocalStorage();
}
//return current ID
var getCurrentId = function() {
let path = window.location.pathname.split('/');
return path[path.length - 1];
}
//get position of element in an array
var getPositionInArray = function(sessionStorage) {
for (let i = 0; i < sessionStorage.length; i++) {
if (Object.keys(sessionStorage[i])[0] == getCurrentId()) {
return i;
}
}
return 0;
}
//get range
var ss\_getRange = function(sessionStorage) {
const array = jsonParse(decoding(sessionStorage));
let position = Number(getPositionInArray(array));
return range = {
prev: array[position - 1] ? array[position - 1] : {},
current: array[position] ? array[position] : {},
next: array[position + 1] ? array[position + 1] : {},
position
}
}
//generate object of position, index, page and length
var getPosition = function() {
let arr = jsonParse(decoding(currentStorage.searchSet));
let position = {
page: currentStorage.page,
index: getPositionInArray(arr),
length: arr.length
};
return position;
}
var getByPosition = function(array, idx) {
return jsonParse(decoding(array))[idx];
}
if (!window.sessionStorage.getItem(KEY)) {
window.sessionStorage.setItem("\_" + KEY, window.localStorage.getItem(KEY));
window.localStorage.removeItem(KEY);
}
//get initial information from LocalStorage
const searchResult = jsonParse(decoding(window.sessionStorage.getItem("\_" + KEY)));
const itemsSet = searchResult.itemsSet;
const searchReq = decoding(searchResult.request);
const pageCount = jsonParse(searchResult.pageCount);
const countElem = jsonParse(searchResult.countElem);
//set local variable
let perPage = jsonParse(searchResult.perPage);
let requestWasSent = false;
//SESSION SECTION
let sessionKey = KEY;
//get sessionStorage by key, if it's not exist set null
let sessionStorage = window.sessionStorage.getItem(sessionKey) || null;
let sessionItemSet = "";
if (sessionStorage) {
sessionItemSet = JSON.parse(sessionStorage).searchSet;
} else {
sessionItemSet = itemsSet;
}
//create local state
let currentStorage = {
page: jsonParse(searchResult.currentPage),
prevSearchSet: "",
searchSet: sessionItemSet,
nextSearchSet: "",
current: ss\_getRange(itemsSet).current,
prev: ss\_getRange(itemsSet).prev,
next: ss\_getRange(itemsSet).next,
position: ss\_getRange(itemsSet).position
}
var setSessionStorage = function() {
window.sessionStorage.setItem(sessionKey, JSON.stringify(currentStorage))
}
//if sessionStorage empty set it with initialState of currentStorage
//if sessionStorage has this key update it with new value
if (!sessionStorage) {
let range = ss\_getRange(itemsSet);
setSessionStorage();
pageNumber = searchResult.currentPage;
} else {
let currentArray = jsonParse(sessionStorage).searchSet;
let currentPage = jsonParse(sessionStorage).page;
let currentRange = ss\_getRange(currentArray);
currentStorage.page = jsonParse(sessionStorage).page;
// currentStorage.current = ss\_getRange(itemsSet).current;
// currentStorage.prev = ss\_getRange(itemsSet).prev;
// currentStorage.next = ss\_getRange(itemsSet).next;
// currentStorage.position = ss\_getRange(itemsSet).position;
currentStorage.current = ss\_getRange(jsonParse(sessionStorage).searchSet).current;
currentStorage.prev = ss\_getRange(jsonParse(sessionStorage).searchSet).prev;
currentStorage.next = ss\_getRange(jsonParse(sessionStorage).searchSet).next;
currentStorage.position = ss\_getRange(jsonParse(sessionStorage).searchSet).position;
currentStorage.prevSearchSet = jsonParse(sessionStorage).prevSearchSet;
currentStorage.nextSearchSet = jsonParse(sessionStorage).nextSearchSet;
if (currentStorage.position === 0 && currentStorage.prevSearchSet != "") {
let prevSet = currentStorage.prevSearchSet;
currentStorage.prev = getByPosition(prevSet, jsonParse(decoding(prevSet)).length - 1);
}
if (currentStorage.position === jsonParse(decoding(currentArray)).length - 1 && currentStorage.nextSearchSet != "") {
let nextSet = currentStorage.nextSearchSet;
currentStorage.next = getByPosition(nextSet, 0);
}
setSessionStorage();
}
let nextPage = currentStorage.page;
//update set of nodes array
var updateLocalStorage = function(data, searchReq, pageNum) {
let newitemsSet = data.nodes.map(e => e.Node).map(e => {
let x = {
[e.id]: e.title
};
return x;
});
let newSet = encoding(JSON.stringify(newitemsSet));
let range = ss\_getRange(currentStorage.searchSet);
if (currentStorage.position == 0) {
currentStorage.prev = getByPosition(newSet, newitemsSet.length - 1);
currentStorage.prevSearchSet = newSet;
}
if (currentStorage.position == (jsonParse(decoding(currentStorage.searchSet)).length - 1) && jsonParse(decoding(currentStorage.searchSet)).length > 1) {
currentStorage.next = getByPosition(newSet, 0);
currentStorage.nextSearchSet = newSet;
}
setSessionStorage();
createButtonsBlock();
}
var sendRequest = function(direction) {
let pageNum = 1;
if (direction.page == 1) {
pageNum = direction.index == 0 ? 1 : (Number(direction.page) + 1);
} else if (direction.page > 1 && direction.page < pageCount) {
pageNum = direction.index == 0 ? (Number(direction.page) - 1) : (Number(direction.page) + 1);
} else {
pageNum = direction.index == 0 ? (Number(direction.page) - 1) : pageCount;
}
const regex = /(page=\d\*)/ius;
let otherReq = searchReq != "" ? (regex.test(searchReq)) ? searchReq.replace(regex, `page=${pageNum}`) : `${searchReq}&page=${pageNum}` : `?page=${pageNum}`;
let newRequest = (searchReq != "" && regex.test(searchReq)) ? searchReq.replace(regex, `page=${pageNum}`) : otherReq;
$.get('/nodes/search\_result/1' + newRequest, data => updateLocalStorage(data, newRequest, pageNum));
}
var getNewArrayOfIds = async function(position) {
if (position.index != 0 && position.index != position.length - 1) {
return;
}
if (((Number(position.index) == position.length - 1) && (Number(position.page) < pageCount)) ||
((Number(position.index) == 0) && (Number(position.page) > 1 && Number(position.page) <= pageCount))) {
if (!requestWasSent) {
await sendRequest(position);
requestWasSent = true;
}
}
}
var getURL = function(pathname = false) {
if (pathname) {
return window.location.origin + window.location.pathname;
}
return window.location.origin;
}
var getParam = function() {
return window.location.search
}
// Added directionForAria - to allow a screen reader to announce 'next item:item title.'
// Unsure if it's safe to change the exisiing data-dir for this - it may be referenced somewhere else.
var createBtn = function(id, title, direct, directionForAria) {
return `<span>
<a href="${getURL()}/nodes/view/${id}?lsk=${KEY}${searchParam}" aria-label='${directionForAria} Item:${title}' title="${encodingHtmlEntities(title)}" data-dir='${direct}'><i class='fa fa-chevron-${direct}'></i></a>
</span>`;
}
var createButtonsBlock = function() {
let rangePrev = Object.keys(currentStorage.prev).length > 0 ? currentStorage.prev : 0;
let rangeNext = Object.keys(currentStorage.next).length > 0 ? currentStorage.next : 0;
let prev = rangePrev != 0 ? rangePrev : "none";
let next = rangeNext != 0 ? rangeNext : "none";
let prevBtn = "<a href='#' style='pointer-events: none;'><i class='fa fa-chevron-left'></i></a>";
let nextBtn = "<a href='#' style='pointer-events: none;'><i class='fa fa-chevron-right'></a>";
if (prev != "none") {
prevBtn = createBtn(Object.keys(prev), Object.values(prev), "left", "Previous");
prevId = Object.keys(prev);
}
if (next != "none") {
nextBtn = createBtn(Object.keys(next), Object.values(next), "right", "Next");
nextId = Object.keys(next);
}
let pos = getPosition();
getNewArrayOfIds(pos);
let arrCount = perPage > 0 ? perPage : 24;
let searchPos = Number(pos.page) == 1 ? (pos.index + 1) : (((Number(pos.page) - 1) \* arrCount) + (pos.index + 1));
$el.innerHTML = `<div class="nav-btn left-btn">${prevBtn}</div>
<div class="nav-btn result-btn">Result ${searchPos} from ${countElem}</div>
<div class="nav-btn bingo right-btn">${nextBtn}</i></div>`;
$('[data-dir="left"]').one('click', () => {
if (pos.index == 0) {
nextPage = currentStorage.page - 1;
}
});
$('[data-dir="right"]').one('click', () => {
if (pos.index == pos.length - 1) {
nextPage = currentStorage.page + 1;
}
});
}
createButtonsBlock();
window.addEventListener('beforeunload', (event) => {
// DF 2023-02-15 R1X-8549 Should not call event.preventDefault() if we don't want
// to propmt the "Are you sure you want to leave the page"-dialog.
if (window.sessionStorage.getItem(sessionKey)) {
if (currentStorage.nextSearchSet != "" || currentStorage.prevSearchSet != "") {
if (currentStorage.page != 1 || currentStorage.page != pageCount) {
if (nextPage > currentStorage.page) {
currentStorage.prevSearchSet = currentStorage.searchSet;
currentStorage.searchSet = currentStorage.nextSearchSet;
currentStorage.nextSearchSet = "";
currentStorage.next = {};
}
if (currentStorage.page > nextPage) {
currentStorage.nextSearchSet = currentStorage.searchSet;
currentStorage.searchSet = currentStorage.prevSearchSet;
currentStorage.prevSearchSet = "";
currentStorage.prev = {};
}
currentStorage.page = nextPage;
}
}
setSessionStorage();
}
}, {
once: true
});
//TO HIDE PARAMS. IT REMOVES PARAMS FROM URL
// history.pushState("", null, getURL(true));
})()

#back-forward {
display: flex;
width: 100%;
max-width: 100%;
justify-content: space-between;
box-sizing: border-box;
/\* margin: 5px 0 5px 5px; \*/
border-radius: 4px;
}
.nav-btn {
padding: 5px;
background-color: #f0f0f0;
}
.left-btn {
border-radius: 2px 0 0 2px;
background-color: #fff;
border: 1px solid #e5e5ee;
}
.right-btn {
border-radius: 0 2px 2px 0;
background-color: #fff;
border: 1px solid #e5e5ee;
}
.result-btn {
/\* font-size: 1.1em;
font-weight: 700; \*/
width: 100%;
border-top: 1px solid #e5e5ee;
border-bottom: 1px solid #e5e5ee;
text-align: center;
}
#dialog-clone-form {
display: none;
}