Open data · Earth Support Corp
Open construction and ground data for New England — bids, builders, bedrock, bridges and permits, measured and shared.
Each opens with the finding, shows its n, and ends with its sources and caveats.
01 · 4 datasets
Who bids, who wins, and what public work really costs — read straight off the bid tabs.
Low bids, second bids and the money left on the table across 1,500+ Massachusetts public bid openings — and how much each extra bidder moves the price.
The weekday, hour and season public work is due — plus how long you get from posting to bid day, and from bid day to mobilization.
The general-contractor field by volume and wins, how concentrated each market is, the home-court advantage, and the rivalries that meet most often.
The engineers and architects behind public work, which of them design the dirt-heavy jobs, and the owners who put the most work out to bid.
02 · 1 dataset
What sits under the site: rock, soil, groundwater and frost.
Depth to rock, what sits above it, groundwater and frost — town by town, from more than 340,000 public well and boring logs.
03 · 2 datasets
The structures and ground hazards the region is carrying.
Every poor-condition and red-listed bridge on one map: how old they are, what they cross, how much traffic rides on them, and which are closed.
High-hazard dams in poor condition, federal disaster repair dollars by county, and the landslide inventory — the ground risk behind the headlines.
04 · 2 datasets
Town by town — how fast permits move and what is being built.
Median days from application to issue, by city and permit type, straight from municipal open-data portals — refreshed as the cities publish.
A map and searchable profile for every town: public construction activity, ground conditions, bridges, dams and permits in one place.
What’s inside
How we handle the data
Federal and state inventories, municipal open data and well logs — cited, dated and linked to the source.
Bid results are shown as totals, medians and rates — an analysis of the market, not a plan room — and groups under 10 are suppressed.
No names, emails, phone numbers or homeowner addresses. Firms and public agencies only.
Every page states its n, its caveats and its method. Spot an error and we fix it.
