US Bridges

RTE 9N over Northwest Bay Brk

Fair

Warren County, New York · Rt 9 6.2 MI NE Bolton L · Structure no. 000000001096040

Built
1928
97 years old, rebuilt 1986
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
1,566
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 9N over Northwest Bay Brk is a steel stringer/multi-beam or girder carrying RTE 9N over Northwest Bay Brk in Warren County, New York. It was built in 1928 and reconstructed in 1986, so it is 97 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 1,566 vehicles a day, roughly 8% of them trucks, projected to reach 1,754 by 2041. The structure is 50 ft (15.2 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesRTE 9N
CrossesNorthwest Bay Brk
LocationRt 9 6.2 MI NE Bolton L
RouteState Highway 9N
CountyWarren County
StateNew York
Coordinates43.63713, -73.60944
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span48 ft (14.6 m)
Deck width29 ft (8.9 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,566 (2020)
Projected traffic1,754 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$1.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 9N over Northwest Bay Brk built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1986.

What condition is RTE 9N over Northwest Bay Brk 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 October 2024.

How much traffic does RTE 9N over Northwest Bay Brk carry?

About 1,566 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is RTE 9N over Northwest Bay Brk?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.6 m) and a deck 29 ft wide.

Who owns RTE 9N over Northwest Bay Brk?

It is owned by the State Highway Agency.