Boise T-Bone and Intersection Accident Lawyers

You had the green light. You had the right of way. And someone came through the intersection anyway.

T-bone crashes — also called side-impact or broadside collisions — are among the most injurious crashes on Treasure Valley roads because the side of a passenger vehicle has almost nothing between the occupant and the striking vehicle. Where the front of a car has three to four feet of crumple zone, the door has six to eight inches. The physics do not favor the person sitting on the struck side. If you were hit in an intersection in Boise, Meridian, Nampa, Eagle, Caldwell, Garden City, or anywhere across Idaho, we are happy to talk to you about your situation.

Intersection crashes are the most common location for serious injury collisions in Ada County. The Idaho Transportation Department’s crash data and ACHD engineering records consistently identify the same intersections as recurring crash hotspots year after year — Eagle Road and Chinden Boulevard, Eagle Road and Fairview Avenue, Curtis Road and Fairview, Overland Road and Five Mile Road, and Ustick Road and Eagle Road among others. These are not isolated incidents at random locations. They are predictable outcomes at intersections with high traffic volumes, complex turning movements, and in some cases signal designs that create hazard. When we investigate a T-bone crash in the Treasure Valley, we look at both the drivers involved and the intersection itself.

Our firm has been practicing personal injury law in Idaho for more than 50 years. Our attorney team has practiced car accident law for well over a combined 100+ years. For a full overview of all car accident claims we handle in Idaho, see our main car accident hub.

Hepworth Holzer also helps residents of Idaho with Personal Injury Matters in: Ada County, Caldwell, Canyon County, Eagle, Garden City, Gem County, Kuna, Meridian, Nampa and Star.

Idaho’s Right-of-Way Law

Idaho Code Section 49-640 and the surrounding intersection statutes establish who has the right of way at controlled and uncontrolled intersections. The rules are clear on paper: vehicles facing a green light proceed, vehicles facing red stop, vehicles at a four-way stop yield to the driver who arrived first (or to the right when simultaneous), and turning drivers must yield to oncoming traffic. In practice, these rules are violated thousands of times every day across the Treasure Valley — most often at the corridor-level intersections where traffic volume and driver impatience collide.

When a driver runs a red light, fails to yield on a left turn, or ignores a stop sign and T-bones your vehicle in the process, that statutory violation is negligence per se under Idaho law. The violation itself establishes the breach of duty without needing further proof of unreasonable behavior. Our job from that point is to prove you suffered the injuries and losses you are claiming — which is where the investigation and the medical documentation become central.

Ada County’s Most Dangerous Intersections

ITD crash data and ACHD engineering records identify specific Treasure Valley intersections as chronic trouble spots. The intersections that appear year after year near the top of Ada County crash-volume lists include:

• Eagle Road (SH-55) and Chinden Boulevard (US-20/26) — one of the highest-volume signalized intersections in the state, with heavy left-turn conflicts and high approach speeds from both directions.
• Eagle Road and Fairview Avenue — dense retail, frequent driveway conflicts, and a consistent top-five presence in Ada County crash data.
• Curtis Road and Fairview Avenue — Boise’s west-side chronic trouble spot with significant pedestrian exposure.
• Overland Road and Five Mile Road — a residential-to-commercial transition where posted speeds often exceed driver expectations.
• Ustick Road and Eagle Road — high-speed approach on Eagle Road combined with frequent left-turn movements creates recurring T-bone crashes.
• Chinden Boulevard and Linder Road — one of Meridian’s fastest-growing corridors, with crash volumes rising sharply in recent years as development has intensified traffic.

Prior crash history at a specific intersection is not just background context in a personal injury case. It can be admissible evidence to show that the agency responsible for the intersection had notice of a dangerous condition and failed to act. When ACHD or ITD records show repeated crashes of the same type at the same location, that pattern becomes part of the case.

The Flashing Yellow Arrow Problem

Flashing yellow left-turn arrows have been deployed at multiple Boise-area intersections as an efficiency measure — they allow left-turning drivers to proceed when gaps appear in oncoming traffic rather than waiting for a protected green arrow. On several Treasure Valley intersections, particularly along State Street and SH-44, the flashing yellow has been associated with an increase in left-turn-across-path T-bone crashes. ACHD engineering review records and public meeting documentation reflect this concern at specific locations.

If your crash involved a flashing yellow arrow, the intersection’s signal design may itself be a contributing factor — and the jurisdiction that designed and maintains it may share liability. Claims against public entities including ACHD, ITD, cities, and counties are governed by the Idaho Tort Claims Act under Idaho Code Section 6-901 et seq., which requires written notice to the government entity within 180 days of the crash. Missing that deadline can permanently extinguish the claim against the public defendant. If a signal design issue may be involved in your crash, call us immediately.