US Bridges

RTE 9N over Northwest Bay Brk

Good

Warren County, New York · N End of Northwest Bay · Structure no. 000000001006790

Built
2005
20 years old
Condition
Good
inspected July 2024
Type
Arch - Deck
Concrete
Length
49 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 concrete arch - deck carrying RTE 9N over Northwest Bay Brk in Warren County, New York. It was built in 2005, so it is 20 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,566 vehicles a day, roughly 8% of them trucks, projected to reach 1,754 by 2041. The structure is 49 ft (14.9 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesRTE 9N
CrossesNorthwest Bay Brk
LocationN End of Northwest Bay
RouteState Highway 9N
Coordinates43.62669, -73.60782
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating70 US tons
Inventory rating46 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length49 ft (14.9 m)
Longest span48 ft (14.6 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 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$707,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 9N over Northwest Bay Brk built?

It was built in 2005, making it 20 years old in 2025.

What condition is RTE 9N over Northwest Bay Brk in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 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 49 ft (14.9 m) long with a longest span of 48 ft (14.6 m) and a deck 33 ft wide.

Who owns RTE 9N over Northwest Bay Brk?

It is owned by the State Highway Agency.