In 1985 the Brent Spence Bridge gained a fourth lane in each direction. It gained them by removing the emergency shoulders and narrowing the lanes that were already there, a trade the two states now describe in plain terms: the reconfiguration brought impacts to driver safety and left vehicle breakdowns and minor crashes blocking traffic. Among the improvements listed at the groundbreaking on 8 May 2026 is the restoration of those shoulders.
Four decades separate that decision and its reversal, and the reversal costs several billion dollars. The sequence explains something the congestion figures do not. A 1963 structure was asked to carry a volume and a vehicle mix it was never laid out for, the cheapest available answer was taken in 1985 at the expense of its shoulders, and that answer has now run out.
Two federal bridge-condition labels no longer exist
The two states are unambiguous about the condition of the structure they are keeping. The project’s own answers to public questions make the point directly, and the published fact sheet adds that the bridge will be restriped from four lanes to three to improve safety once interstate traffic moves to the companion span.
The bridge is safe and structurally sound and will serve a critical transportation need for decades to come.
Two federal condition labels used to carry most of the sorting work in arguments of this kind, and both have since been withdrawn. The Federal Highway Administration’s own reference tables record how. Functionally obsolete, the agency explains, is a legacy classification that was used to implement the Highway Bridge Program, which was discontinued with the enactment of MAP-21; FHWA stopped tracking and publishing the measure from the 2016 data archive forward. Structurally deficient went next, eliminated from use in the National Bridge Inspection Program beginning with the 2018 data archive and replaced by a Poor condition classification triggered when a deck, superstructure, substructure or culvert is coded 4 or less.
Neither term now denotes anything a federal database holds, which matters for how a case like this one has to be made. The mechanics of what replaced them are set out in how bridges are inspected and rated. With the categories gone, the argument for spending billions here rests on geometry, capacity and crash exposure, and that is how the two governments now argue it: more than $1 billion in freight passes through the I-71 and I-75 corridor daily, and the existing bridge carries significantly more traffic than it was designed to handle. The freight side of that claim is examined across the most important freight corridors.
A toll-free crossing is a financing decision, not a courtesy
The commitment to build without tolls runs through every document the two states have issued. At the groundbreaking, Senator Mitch McConnell described the arrangement that made the project possible as one where the cost would be shared between state and federal government so that no one travelling through would have to pay a toll. Kentucky’s governor, announcing the construction start in March 2026, put the same commitment in the form of a promise kept.
The consequence is arithmetic rather than politics. With no user charge, the balance above the federal grants falls to state revenues or state borrowing. The releases say so directly: funding is expected to be covered through Kentucky Transportation Cabinet and Ohio Department of Transportation state revenues or through financing, with each state covering its own highway work and the two sharing the cost of the companion bridge. Kentucky’s share of the construction cost now under way is $1.7 billion. A toll would have converted part of that into a revenue stream borrowed against. Without one, the corridor advances at the speed of two state capital programs.
What the federal award actually paid for
The December 2022 announcement described $1.635 billion in federal grants, the largest single piece of which is documented separately by the awarding agency. FHWA’s published list of Bridge Investment Program grant recipients, updated 29 March 2023, records $1,385,000,000 for the Brent Spence Bridge Corridor Project, the largest of four large bridge awards that year totalling $2,087,150,000.
The description attached to that grant repays attention. FHWA characterises the funded work as rehabilitating and reconfiguring the existing Brent Spence Bridge, which carries I-75 and I-71 traffic across the Ohio River. The remaining $250 million arrived through a second award; the 2026 releases refer to two U.S. Department of Transportation grants totalling $1.63 billion without naming the second program. Anyone reconstructing the federal contribution from published documents can therefore verify the larger grant precisely and the smaller one only as a residual.
Two published totals, and only one of them covers the whole corridor
The 2022 announcement said the project was likely to cost about $3.6 billion, a figure produced after FHWA required the project team to complete an analysis to better identify project cost estimates, and it put substantial completion in 2029. In March 2026 Kentucky published $4.05 billion and said two independent estimators had verified it.
Treating that as an increase of $450 million would be a mistake, because the second figure covers less ground. The March 2026 release states that the $4.05 billion buys the first portion of the corridor project, and that subsequent portions, meaning the additional highway improvements north and south in both states together with the rehabilitation of the Brent Spence Bridge itself, will be estimated closer to the time of construction so that current material prices can be used. The 2029 date belonged to a differently drawn scope and has been replaced by two milestones: the companion bridge open in 2031, approach work substantially complete by 2033.
On escalation the same release supplies its own benchmark, attributing to FHWA’s National Highway Construction Cost Index a 61 percent national rise in highway construction costs between 2020 and 2025. Set against that, a corridor priced in 2022 and rebid in 2026 would have moved substantially even with no change in what was being bought. Comparisons of this kind recur throughout major projects coverage, and the general problem of unlike totals is worked through in the survey of the largest current builds.
The structure, and the eight miles around it
The companion bridge is a cable-stayed double-deck structure carrying five lanes in each direction with two 14-foot shoulders on each deck. Interstate traffic moves to it; short trips between Cincinnati and Covington stay on the existing bridge. Around the crossing, all the connections are being overhauled, which the state puts at more than 30 overpasses or underpasses in Ohio and a dozen in Kentucky. The phase now building is the bridge plus roughly one mile of approach in each state, chosen because redirecting I-71 and I-75 over the new span is the fastest route to the safety and congestion benefit. Kentucky expects about 6 million hours of work and more than 700 tradespeople, reaching 1,000 at peak.
The honest measure of this project will not be the 2031 ribbon. It will be whether the rest of the corridor named in the grant, the eight miles the two states have been describing since 2022, ever receives a price. A funded bridge with two miles of approach is a real achievement and a partial one, and the documents are unusually candid about which part is which.