US Bridges

RTE 9N over Mckenzie Brook

Good

Essex County, New York · Rt 9N S End Port Henry · Structure no. 000000001006860

Built
2008
17 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
57 ft
1 main span
Daily traffic
2,625
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 9N over Mckenzie Brook is a prestressed concrete box beam or girders - multiple carrying RTE 9N over Mckenzie Brook in Essex County, New York. It was built in 2008, so it is 17 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 2,625 vehicles a day, roughly 13% of them trucks, projected to reach 2,941 by 2041. The structure is 57 ft (17.4 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesRTE 9N
CrossesMckenzie Brook
LocationRt 9N S End Port Henry
RouteState Highway 9N
CountyEssex County
StateNew York
Coordinates44.03565, -73.46187
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating110.1 US tons
Inventory rating74 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length57 ft (17.4 m)
Longest span53 ft (16.2 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,625 (2020)
Projected traffic2,941 by 2041
Trucks13%
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 Mckenzie Brook built?

It was built in 2008, making it 17 years old in 2025.

What condition is RTE 9N over Mckenzie Brook 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 August 2024.

How much traffic does RTE 9N over Mckenzie Brook carry?

About 2,625 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is RTE 9N over Mckenzie Brook?

The structure is 57 ft (17.4 m) long with a longest span of 53 ft (16.2 m) and a deck 35 ft wide.

Who owns RTE 9N over Mckenzie Brook?

It is owned by the State Highway Agency.