NPCA certified
Box Culverts
Custom precast concrete box culverts engineered for infrastructure projects — highway bridges, pedestrian underpasses, stormwater management and livestock crossings. Each RCB structure is built to exact project specifications.
Reinforced concrete box culverts, built to project spec.
Custom precast concrete box culverts engineered for infrastructure projects — highway bridges, pedestrian underpasses, stormwater management and livestock crossings. Each RCB structure is built to exact project specifications.
Box Culverts guides
Sizing, installation and specification, written by the people who pour the product.
Box Culvert Guide: Types, Sizes, Cost, and How They’re Made
The complete box culvert guide from a Montana precaster: types, sizes and spans, cost drivers, how they are made and…
Read the guideWhat Is a Box Culvert? Uses, Types, and How They Work
What is a box culvert? A Montana precaster explains what box culverts are, how they work, what they are used…
Read the guideBox Culvert Sizes and Dimensions: Spans, Rises, and Load
Box culvert sizes made readable by a Montana precaster: standard spans and rises, how culverts are sized, load ratings, and…
Read the guideBox Culvert Cost: What Drives the Price
What box culvert cost depends on, from a Montana precaster: span, cells, load rating, custom work, quantity, delivery, and why…
Read the guidePrecast vs Cast-in-Place Box Culverts: Which Is Faster?
Precast vs cast-in-place box culverts, compared fairly by a Montana precaster: speed, cost, quality, stream disruption, and when each method…
Read the guideBox Culvert Installation: How Precast Culverts Are Set
How box culvert installation works, from a Montana precaster: excavation, bedding, crane set, headwalls, backfill, and why precast goes in…
Read the guideThe Three-Sided Box Culvert: RCBs for Bridges and Streams
What a three-sided box culvert is, from a Montana precaster: open-bottom design, 3-sided vs 4-sided, RCBs, short-span bridges, and fish…
Read the guideTalk to us about Box Culverts
Tell us what you are building and we will point you to the right product, size, and lead time. No pressure, no bots.
(406) 752-7163Have a project in mind?
Send us the drawings, the dimensions, or just the idea. We will tell you what is possible, what it costs, and when we can set it.


