US Bridges

RTE 30 over Salmon River

Fair

Hamilton County, New York · 4.2 MI N JCT SH28N & SH28 · Structure no. 000000001020460

Built
1930
95 years old, rebuilt 2005
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
37 ft
1 main span
Daily traffic
1,275
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 30 over Salmon River is a concrete box beam or girders - multiple carrying RTE 30 over Salmon River in Hamilton County, New York. It was built in 1930 and reconstructed in 2005, so it is 95 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.

It carries about 1,275 vehicles a day, roughly 8% of them trucks, projected to reach 1,375 by 2041. The structure is 37 ft (11.3 m) long and 33 ft wide. If it were closed, the detour would be 60.9 mi (98 km).

Location

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CarriesRTE 30
CrossesSalmon River
Location4.2 MI N JCT SH28N & SH28
RouteState Highway 30
CountyHamilton County
StateNew York
Coordinates43.90328, -74.4367
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
Deck7 GoodSome minor problems.
Superstructure9 ExcellentNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating81 US tons
Inventory rating38 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length37 ft (11.3 m)
Longest span33 ft (10.2 m)
Deck width33 ft (10 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,275 (2021)
Projected traffic1,375 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.9 mi (98 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$827,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 30 over Salmon River built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2005.

What condition is RTE 30 over Salmon River 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 July 2023.

How much traffic does RTE 30 over Salmon River carry?

About 1,275 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is RTE 30 over Salmon River?

The structure is 37 ft (11.3 m) long with a longest span of 33 ft (10.2 m) and a deck 33 ft wide.

Who owns RTE 30 over Salmon River?

It is owned by the State Highway Agency.