US Bridges

RTE 346 over Hoosic River

Fair

Rensselaer County, New York · JCT.RTE.346&HOOSIC River · Structure no. 000000001072760

Built
1983
42 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
220 ft
2 main spans
Daily traffic
1,616
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 346 over Hoosic River is a steel continuous stringer/multi-beam or girder carrying RTE 346 over Hoosic River in Rensselaer County, New York. It was built in 1983, so it is 42 years old, younger 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 1,616 vehicles a day, roughly 10% of them trucks, projected to reach 1,685 by 2041. The structure is 220 ft (67.1 m) long and 43 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesRTE 346
CrossesHoosic River
LocationJCT.RTE.346&HOOSIC River
RouteState Highway 346
CountyRensselaer County
StateNew York
Coordinates42.80947, -73.28648
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating47.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length220 ft (67.1 m)
Longest span109 ft (33.2 m)
Deck width43 ft (13 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,616 (2021)
Projected traffic1,685 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

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$3.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 346 over Hoosic River built?

It was built in 1983, making it 42 years old in 2025.

What condition is RTE 346 over Hoosic 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 June 2023.

How much traffic does RTE 346 over Hoosic River carry?

About 1,616 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is RTE 346 over Hoosic River?

The structure is 220 ft (67.1 m) long with a longest span of 109 ft (33.2 m) and a deck 43 ft wide.

Who owns RTE 346 over Hoosic River?

It is owned by the State Highway Agency.