Traffic signal installation cost per lump sum in Washington
Updated · BuildGets Team
Public bids in Washington put the traffic signal installation at a median of $62,000 per lump sum, with the middle half of bids between $40,000 and $70,000. That is 3 % above the national median of $60,000. Based on 60 bidder prices from 8 public bid tabulations opened between September 2022 and March 2025.
| Median bid in Washington | $62,000 / LS |
| Middle 50 % of bids | $40,000 – $70,000 |
| National median | $60,000 (+3 %) |
| Bidder prices · bid tabs · owners | 60 · 8 · 2 |
Bid tabs in Washington
| Owner | Bid opening | Low bid | Median of bids | Bids |
|---|---|---|---|---|
| Clark County Public Works | Mar 2025 | $20,000 | $4,400 | 22 |
| Clark County Public Works | Feb 2025 | $74,000 | $74,000 | 7 |
| Clark County Public Works | Jan 2025 | $92,000 | $62,000 | 18 |
| Clark County Public Works | Oct 2024 | $55,000 | $55,000 | 18 |
| WASHINGTON STATE DEPARTMENT OF TRANSPORTATION | Dec 2022 | $67,500 | 4 | |
| WASHINGTON STATE DEPARTMENT OF TRANSPORTATION | Dec 2022 | $75,000 | $82,800 | 3 |
| WASHINGTON STATE DEPARTMENT OF TRANSPORTATION | Oct 2022 | $45,000 | $69,500 | 4 |
| WASHINGTON STATE DEPARTMENT OF TRANSPORTATION | Sep 2022 | $12,000 | $225,000 | 4 |
Prices are what contractors bid on public jobs in Washington, not installed costs from a price book. What each item includes varies by owner: read the item description in each bid tab before comparing. National figure and every state: traffic signal installation unit price. Every unit price in Washington: Washington unit prices.
Cite as: BuildGets BID, Traffic signal installation cost per lump sum in Washington, October 2026. https://www.buildgets.com/us/unit-prices/traffic-signal-installation-per-ls/wa/ (CC BY 4.0)
Questions
How much does a traffic signal installation cost in Washington?
Public bids in Washington put the traffic signal installation at a median of $62,000 per lump sum, with the middle half of bids between $40,000 and $70,000. That is 3 % above the national median of $60,000. Based on 60 bidder prices from 8 public bid tabulations opened between September 2022 and March 2025.
Is Washington more expensive than the national average?
For this item the Washington median bid is 3 % above the national median of $60,000. Bid prices depend on the owner, the job size and what the item includes, so compare with the sources below.