Construction glossary · Sitework

What is curb and gutterin construction?

Curb and gutter in construction is the cast concrete edge assembly along pavement that pairs a curb face with a gutter pan, holding the pavement edge and channeling stormwater to the catch basins. Estimators take it off in linear feet (lf), split by section type from the civil details. Long straight runs are machine-placed with a slipform curb machine, while tight radii, transitions, and short closure pieces are hand-formed at a noticeably higher unit cost.

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Updated June 2026 · Reviewed by the Ruh construction team

Measured in lf by sectionKey split machine vs handLives on civil C-sheetsCost driver hand-formed share

How curb and gutter footage splits for pricing

The definition

Curb and gutter, explained.

Curb and gutter is the concrete edging of the paving assembly. On the civil C-sheets it appears as a line type tracing pavement edges and parking islands, with callouts pointing to section details: a 6 inch vertical curb with a 24 inch gutter pan is a common commercial section, alongside roll (mountable) curb, ribbon curb, and depressed curb at driveways and ADA ramps. The concrete sitework sub or the paving contractor owns the scope, and sequencing matters because curb usually goes in before the asphalt so the paver can work against it. New estimators make predictable mistakes: they lump every section type into one lf line even though a tall vertical section and a ribbon curb carry different concrete volumes and labor; they ignore the machine versus hand split, which can swing the unit cost by half; they miss depressed curb transitions at every ramp and drive; and they double count runs that show on both the paving plan and the grading plan.

How it is measured

Curb and gutter is measured in lf along the run, taken off separately for each section type called out in the details. The takeoff also splits machine-placed footage from hand-formed footage, since a slipform machine extrudes long straight runs and gentle curves cheaply, while radii tighter than the machine can track, short island returns, transitions, and closure pours are formed and poured by hand. Cost drivers are the cross-section size (concrete per lf), the hand-formed share, the number of mobilizations, and demolition of existing curb where the site is a redo. A concrete volume check (cross-section area in cf per lf times total lf, divided by 27) catches gross takeoff errors before bid day.

Worked example

A worked curb and gutter example.

Worked example

Total length1,040 + (8 x 60) = 1,520 lf

Machine vs hand1,520 - 220 = 1,300 lf machine, 220 lf hand

Cost lines (illustrative)1,300 x $24 = $31,200; 220 x $38 = $8,360

Concrete sanity check1,520 lf x 1.6 cf = 2,432 cf / 27 = about 90 cy

Total (illustrative)$31,200 + $8,360 = $39,560

How Ruh handles it

How Ruh handles curb and gutter.

Ruh traces the curb runs off the civil plans, breaks the footage out by section type, and prices each line from the contractor's own price book, keeping the lf visible so the machine versus hand split is easy to apply. The estimator reviews the breakout, adjusts the split and unit costs to match crew and equipment, and signs off on the final numbers.

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Curb and gutter: frequently asked questions

Is curb and gutter measured in linear feet or cubic yards?+

Linear feet, broken out by section type, because that is how crews price and place it. Cubic yards show up secondarily: estimators convert the lf to concrete volume to order material and to sanity check the takeoff, since each section detail has a fixed cross-section. If the cy total looks wildly off against the lf at a known cf per lf, something in the takeoff is wrong.

What is the difference between machine-placed and hand-formed curb?+

A slipform curb machine extrudes the section continuously behind string line or stringless guidance, covering long runs fast with a small crew. Hand-forming means setting forms, pouring, and finishing by hand, which is unavoidable on tight radii, short island returns, transitions, closure pours, and repairs. Hand work can cost half again or more per lf, so the machine versus hand split belongs in the takeoff, not buried in an average.

Does curb and gutter include the sidewalk or the asphalt next to it?+

No. Sidewalk, asphalt paving, and aggregate base are separate takeoff lines and often separate subcontracts, even though they meet at the curb. What the curb scope does include is its own base preparation, the depressed and transition sections at driveways and ADA ramps, and expansion joints. Coordinate grades carefully: curb usually pours before the asphalt, and the gutter flow line sets the drainage the paving must match.

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What is curb and gutterin construction?

Curb and gutter, explained.

A worked curb and gutter example.

Worked example

How Ruh handles curb and gutter.

Curb and gutter: frequently asked questions

Related terms

Knowing what curb and gutter means is the easy half.

Try Ruh on a bid you are pricing now.

Put your next takeoff on Ruh.