Transport · Bridges

What crosses a toll bridge — and how it pays

A tolled estuary crossing is the purest infrastructure monopoly there is: one structure, no competing route, and a charge on every vehicle that crosses. The cost base — inspection, structural maintenance, toll collection — is tiny and almost entirely fixed, so nearly every toll drops straight to profit. The investment case turns on the daily crossings, the toll, and the share of heavy vehicles, which pay a multiple.

70,000
£2.50
12%
LIVE
Light vehicle cars & vans — the volume base Heavy vehicle HGVs & coaches — pay ~2.5× Toll point every crossing charged at the plaza Operating cost tiny & mostly fixed
Flows — annualised from current assumptionsper year
Revenue p.a.
£0
£0 / hr
EBITDA p.a.
£0
0% margin
Revenue / crossing
£0
blended toll
Crossings / day
0
12% heavy
Stocks — what the flows accumulate intolive
Crossings · session
0
at 70,000 / day
EBITDA banked · session
£0
accumulating in real time
Implied enterprise value
£0
at 24× EBITDA
Where revenue comes from Total £0 p.a.
Light vehicles
Heavy vehicles
Why investors prize toll bridges: a critical crossing is the closest thing to a true monopoly in infrastructure — there is usually no alternative for miles, so traffic is exceptionally inelastic and tolls are typically inflation-linked. A single structure has a minuscule, almost wholly fixed cost base, so margins run 70–85% and the highest multiples follow. The only real questions are how busy the crossing is and how long the concession runs.
Revenue streams£0 p.a.
Operating costs£0 p.a.
Investment case — should you buy it?DCF returns

Year-1 financials flow live from the simulation above: revenue £0 and EBITDA £0 p.a. Set your deal terms below — the unlevered IRR (asset return) and levered IRR (return to equity, after debt) recompute instantly.

Operating

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%
%
%
%
%

Valuation & hold

×
×
y

Financing

×
%
%
Unlevered IRR
—
asset / project return
Levered IRR
—
return to equity
Equity multiple
—
MOIC over hold
Equity gain
—
exit equity − invested
Equity cash-flow profile£m · ■ invested   ■ returned
Projection — £m per year

Illustrative model. Represents a tolled estuary/river crossing concession. Revenue = crossings × toll, where heavy vehicles pay a multiple of the car toll, plus modest commercial income. Operating costs (structural inspection & maintenance, a major-works provision, toll collection, insurance and a revenue-linked concession fee) are small and dominated by fixed items, with only the collection cost and the concession fee scaling with volume — so each extra crossing is overwhelmingly incremental margin and traffic drives the result. EBITDA = revenue − operating costs; excludes upfront construction/acquisition capex. The investment case is a simplified DCF. For illustration only — not investment advice, and not any specific asset.