US Bridges

RTE 30 over Long Lake

Fair

Hamilton County, New York · .4 MI N JCT SH 28N & SH30 · Structure no. 000000001021240

Built
1940
85 years old, rebuilt 1991
Condition
Fair
inspected May 2023
Type
Truss - Thru
Steel
Length
213 ft
1 main span
Daily traffic
1,095
2016 count
Owner
State
State Highway Agency

About this bridge

RTE 30 over Long Lake is a steel truss - thru carrying RTE 30 over Long Lake in Hamilton County, New York. It was built in 1940 and reconstructed in 1991, so it is 85 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,095 vehicles a day, roughly 20% of them trucks, projected to reach 1,181 by 2041. The structure is 213 ft (64.9 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesRTE 30
CrossesLong Lake
Location.4 MI N JCT SH 28N & SH30
RouteState Highway 30
CountyHamilton County
StateNew York
Coordinates43.97453, -74.42594
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length213 ft (64.9 m)
Longest span210 ft (64 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic1,095 (2016)
Projected traffic1,181 by 2041
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$9.5 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 30 over Long Lake built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1991.

What condition is RTE 30 over Long Lake 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 May 2023.

How much traffic does RTE 30 over Long Lake carry?

About 1,095 vehicles per day (2016 count), of which roughly 20% are trucks.

How long is RTE 30 over Long Lake?

The structure is 213 ft (64.9 m) long with a longest span of 210 ft (64 m) and a deck 32 ft wide.

Who owns RTE 30 over Long Lake?

It is owned by the State Highway Agency.