US Bridges

Lock Six Road over Champlain Canal

FairPosted for load

Washington County, New York · In Fort Miller · Structure no. 000000004418140

Built
1907
118 years old
Condition
Fair
inspected September 2024
Type
Truss - Thru
Steel
Length
84 ft
1 main span
Daily traffic
110
2017 count
Owner
State
State Highway Agency

About this bridge

Lock Six Road over Champlain Canal is a steel truss - thru carrying Lock Six Road over Champlain Canal in Washington County, New York. It was built in 1907, so it is 118 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for other load-capacity restriction.

It carries about 110 vehicles a day, roughly 10% of them trucks, projected to reach 154 by 2037. The structure is 84 ft (25.6 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesLock Six Road
CrossesChamplain Canal
LocationIn Fort Miller
CountyWashington County
StateNew York
Coordinates43.16087, -73.57989
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length84 ft (25.6 m)
Longest span82 ft (25 m)
Deck width28 ft (8.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2017)
Projected traffic154 by 2037
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$4.9 million (2024 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Lock Six Road over Champlain Canal built?

It was built in 1907, making it 118 years old in 2025.

What condition is Lock Six Road over Champlain Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Lock Six Road over Champlain Canal carry?

About 110 vehicles per day (2017 count), of which roughly 10% are trucks.

How long is Lock Six Road over Champlain Canal?

The structure is 84 ft (25.6 m) long with a longest span of 82 ft (25 m) and a deck 28 ft wide.

Who owns Lock Six Road over Champlain Canal?

It is owned by the State Highway Agency.