US Bridges

I-81 NB Ramps to N over Brown Brook

Fair

Jefferson County, New York · 0.1 MI E of SR178 & I-81 · Structure no. 000000001073620

Built
1959
66 years old
Condition
Fair
inspected July 2023
Type
Culvert
Steel
Length
23 ft
2 main spans
Daily traffic
1,065
2016 count
Owner
State
State Highway Agency

About this bridge

I-81 NB Ramps to N over Brown Brook is a steel culvert carrying I-81 NB Ramps to N over Brown Brook in Jefferson County, New York. It was built in 1959, so it is 66 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 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 1,065 vehicles a day, roughly 33% of them trucks, projected to reach 1,268 by 2041. The structure is 23 ft (7 m) long.

Location

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CarriesI-81 NB Ramps to N
CrossesBrown Brook
Location0.1 MI E of SR178 & I-81
RouteState Highway 0
CountyJefferson County
StateNew York
Coordinates43.81156, -76.03176
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,065 (2016)
Projected traffic1,268 by 2041
Trucks33%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$472,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-81 NB Ramps to N over Brown Brook built?

It was built in 1959, making it 66 years old in 2025.

What condition is I-81 NB Ramps to N over Brown Brook 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 I-81 NB Ramps to N over Brown Brook carry?

About 1,065 vehicles per day (2016 count), of which roughly 33% are trucks.

How long is I-81 NB Ramps to N over Brown Brook?

The structure is 23 ft (7 m) long with a longest span of 9 ft (2.7 m).

Who owns I-81 NB Ramps to N over Brown Brook?

It is owned by the State Highway Agency.