WeighHerePublic scales for U-Hauls, RVs, horse trailers, and PPM loads
Call ahead. Hours, fees, and walk-up rules change. WeighHere is not CDFA, CAT, or CHP.

Boise · Caldwell · Mountain Home · Jerome · I-84 · Ada, Canyon, Elmore & Jerome Counties ID · listings checked 13 Oct 2026

Public scales in Boise / Treasure Valley (I-84)

Five CAT Scales verified on the operators’ own location pages along I-84 across southwestern Idaho, west to east: ONE9 #1428 Caldwell (I-84 business loop at W Simplot Blvd), Flying J #638 Caldwell (I-84 Exit 29), TA Boise #0167 (I-84 Exit 54), Pilot #350 Mountain Home (I-84/US-20 Exit 95), and Flying J #640 Jerome (I-84 Exit 173). Useful for U-Haul and PPM moves into Boise / Nampa / Caldwell, RVs on I-84 toward Twin Falls, and horse trailers on the Snake River Plain. Heading east on I-15 toward Pocatello / Idaho Falls, see McCammon / Idaho Falls / I-15. ONE9 #777 Boise, ONE9 #1426 Nampa and ONE9 #1429 Fruitland still omit CAT Scale from their visible amenities lists (or have no amenities card) — held back. Love’s Idaho own pages returned HTTP 500 tonight.

This page lists 5 places to weigh near Boise & Treasure Valley, ID: 5 CAT or truck-stop scales. They are in Caldwell, Boise, Mountain Home and Jerome. 5 are listed as likely to print a certified weight ticket, the kind PPM movers and RV owners checking weight ratings usually need. CAT platforms have a 2,000 lb minimum and do not give corner weights.

5 verified listings · 0 dedicated houses · 5 CAT stops · Ada, Canyon, Elmore & Jerome Counties ID

Filters hide cards, not industrial rows. CAT will not weigh under 2,000 lb — use a dedicated house for cars and empty utility trailers.

No verified dedicated public scale house on Treasure Valley / I-84 tonight

Idaho does not publish a CDFA-style public-scale grid we can cite for this corridor, and ScaleRegistry’s public-weighing page lists no walk-up house in Ada, Canyon, Elmore or Jerome County ID. We are not inventing one from industrial scale vendors, grain elevators, recyclers, landfill gate scales, or third-party trucker directories. Every stop below is a CAT Scale at a truck stop, verified on the operator’s own page.

CAT Scales on I-84 from Caldwell to Jerome

We list only stops verified on the operator’s own location page. ONE9 #1428, Flying J #638, Pilot #350 and Flying J #640 list CAT Scale in amenities (Pilot #350 and both Flying Js also answer yes to “has a CAT scale”); TA Boise #0167 lists CAT Scale on TA Petro’s own page. 2,000 lb floor. No corner weights. Weigh the whole rig, then drop the trailer and weigh the tow vehicle for the trailer number. Do not unload horses at a truck stop. Idaho weighmaster rules differ from California — confirm ticket needs with your TO or DMV equivalent. Use CAT’s locator for other stops.

CAT ScaleWalk-up more likelyNot a DOT station

ONE9 Dealer #1428 Caldwell — CAT Scale

122 W Simplot Blvd, Caldwell, ID 83605 · Map

(208) 459-0027

Certified ticket
Likely (licensed weighmaster list / CAT)
Livestock
Unknown — we do not invent livestock policy.
24-hour
Travel center listed 24h; confirm scale staffing
Hours / access
ONE9’s own #1428 page lists the store as Open 24 Hours and CAT Scale among amenities. That is the store’s hours, not a published CAT-staffing schedule. Confirm the scale is working before a middle-of-the-night trip.

ONE9’s own Caldwell / Simplot Blvd page (I-84 business loop at W Simplot Blvd) lists CAT Scale among amenities. Canyon County ID, west end of the Treasure Valley toward Oregon. Useful for PPM / U-Haul and RV weigh-ins on I-84 before Boise. CAT 2,000 lb floor; no corner weights. Idaho weighmaster rules differ from California — confirm ticket needs with your TO or DMV equivalent. Do not unload horses in the lot. Confirm on CAT’s locator. Not a DOT station.

Source: Pilot Flying J location page — ONE9 #1428 Caldwell · Operator page · Last checked 2026-10-13

CAT ScaleWalk-up more likelyNot a DOT station

Flying J Travel Center #638 Caldwell — CAT Scale

3512 Franklin Rd, Caldwell, ID 83605 · Map

(208) 453-9225

Certified ticket
Likely (licensed weighmaster list / CAT)
Livestock
Unknown — we do not invent livestock policy.
24-hour
Travel center listed 24h; confirm scale staffing
Hours / access
Flying J’s own #638 page lists the store as Open 24 Hours and CAT Scale among amenities. That is the store’s hours, not a published CAT-staffing schedule. Confirm the scale is working before a middle-of-the-night trip.

Flying J’s own Caldwell page (I-84 Exit 29) lists CAT Scale among amenities and answers yes to “has a CAT scale.” Canyon County ID; Franklin Rd interchange on the west side of the Treasure Valley. Useful for PPM / U-Haul and RV weigh-ins between Ontario OR and Boise. CAT 2,000 lb floor; no corner weights. Idaho weighmaster rules differ from California — confirm ticket needs with your TO or DMV equivalent. Do not unload horses in the lot. Confirm on CAT’s locator. Not a DOT station.

Source: Pilot Flying J location page — Flying J #638 Caldwell · Operator page · Last checked 2026-10-13

CAT ScaleWalk-up more likelyNot a DOT station

TA Boise #0167 — CAT Scale

4115 Broadway Ave, Boise, ID 83705 · Map

(208) 344-1091

Certified ticket
Likely (licensed weighmaster list / CAT)
Livestock
Unknown — we do not invent livestock policy.
24-hour
Travel center listed 24h; confirm scale staffing
Hours / access
TA’s own Boise page describes the stop at I-84 Exit 54 and lists CAT Scale among amenities. Store hours are not published as a CAT-staffing schedule. Confirm the scale is working before a middle-of-the-night trip.

TA’s own Boise page (I-84 Exit 54) lists CAT Scale among amenities. Ada County ID; Broadway Ave interchange on the south side of Boise. Useful for PPM / U-Haul moves into Boise and RVs on I-84 through the Treasure Valley. CAT 2,000 lb floor; no corner weights. Idaho weighmaster rules differ from California — confirm ticket needs with your TO or DMV equivalent. Do not unload horses in the lot. Confirm on CAT’s locator. Not a DOT station.

Source: TA Petro location page — TA Boise #0167 · Operator page · Last checked 2026-10-13

CAT ScaleWalk-up more likelyNot a DOT station

Pilot Travel Center #350 Mountain Home — CAT Scale

1050 US-20, Mountain Home, ID 83647 · Map

(208) 587-4465

Certified ticket
Likely (licensed weighmaster list / CAT)
Livestock
Unknown — we do not invent livestock policy.
24-hour
Travel center listed 24h; confirm scale staffing
Hours / access
Pilot’s own #350 page lists the store as Open 24 Hours and CAT Scale among amenities. That is the store’s hours, not a published CAT-staffing schedule. Confirm the scale is working before a middle-of-the-night trip.

Pilot’s own Mountain Home page (I-84/US-20 Exit 95) lists CAT Scale among amenities and answers yes to “has a CAT scale.” Elmore County ID; about 40 miles southeast of Boise on I-84 toward Twin Falls. Useful for PPM / U-Haul and RV weigh-ins between Boise and the Magic Valley. CAT 2,000 lb floor; no corner weights. Idaho weighmaster rules differ from California — confirm ticket needs with your TO or DMV equivalent. Do not unload horses in the lot. Confirm on CAT’s locator. Not a DOT station.

Source: Pilot Flying J location page — Pilot #350 Mountain Home · Operator page · Last checked 2026-10-13

CAT ScaleWalk-up more likelyNot a DOT station

Flying J Travel Center #640 Jerome — CAT Scale

5350 US-93, Jerome, ID 83338 · Map

(208) 324-3454

Certified ticket
Likely (licensed weighmaster list / CAT)
Livestock
Unknown — we do not invent livestock policy.
24-hour
Travel center listed 24h; confirm scale staffing
Hours / access
Flying J’s own #640 page lists the store as Open 24 Hours and CAT Scale among amenities. That is the store’s hours, not a published CAT-staffing schedule. Confirm the scale is working before a middle-of-the-night trip.

Flying J’s own Jerome page (I-84 Exit 173) lists CAT Scale among amenities and answers yes to “has a CAT scale.” Jerome County ID; US-93 interchange toward Twin Falls and the Magic Valley. Useful for PPM / U-Haul and RV weigh-ins on I-84 east of Mountain Home. CAT 2,000 lb floor; no corner weights. Idaho weighmaster rules differ from California — confirm ticket needs with your TO or DMV equivalent. Do not unload horses in the lot. Confirm on CAT’s locator. Not a DOT station.

Source: Pilot Flying J location page — Flying J #640 Jerome · Operator page · Last checked 2026-10-13

Do not go here for a ticket

Idaho port-of-entry and highway weigh / commercial-enforcement sites on I-84 are for commercial vehicles — not a place to buy a civilian weighmaster ticket for a U-Haul, RV, boat, horse trailer, or PPM load. Follow posted signs; do not treat this directory as a bypass guide.

What we still need to verify

Any dedicated public scale house in Boise, Nampa, Caldwell, Mountain Home or Ada/Canyon/Elmore County with an operator page that sells walk-up weighmaster certificates. ONE9 #777 Boise, ONE9 #1426 Nampa and ONE9 #1429 Fruitland if their amenities cards start listing CAT Scale. Love’s Idaho own-page locations (state index HTTP 500 tonight). Twin Falls / Burley / I-84 east of Jerome. Livestock policy everywhere. Store-listed 24h vs published CAT staffing.

Sources: ONE9 #1428 Caldwell · Flying J #638 Caldwell · TA Boise #0167 · Pilot #350 Mountain Home · Flying J #640 Jerome · ONE9 #777 Boise (checked, amenities omit CAT) · ONE9 #1426 Nampa (checked, no amenities card) · ONE9 #1429 Fruitland (checked, no amenities card) · CAT Scale locator (linked, not republished) · ScaleRegistry public scales

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