US Bridges

Adirondack Road over Mill Brook

Fair

Warren County, New York · In Adirondack · Structure no. 000000003305280

Built
1932
93 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
1,133
2017 count
Owner
County
County Highway Agency

About this bridge

Adirondack Road over Mill Brook is a steel stringer/multi-beam or girder carrying Adirondack Road over Mill Brook in Warren County, New York. It was built in 1932, so it is 93 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 1,133 vehicles a day, roughly 10% of them trucks, projected to reach 1,586 by 2037. The structure is 23 ft (7 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesAdirondack Road
CrossesMill Brook
LocationIn Adirondack
RouteCounty Highway 0
CountyWarren County
StateNew York
Coordinates43.76373, -73.75912
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating101 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span22 ft (6.7 m)
Deck width31 ft (9.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,133 (2017)
Projected traffic1,586 by 2037
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$570,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Adirondack Road over Mill Brook built?

It was built in 1932, making it 93 years old in 2025.

What condition is Adirondack Road over Mill 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 June 2024.

How much traffic does Adirondack Road over Mill Brook carry?

About 1,133 vehicles per day (2017 count), of which roughly 10% are trucks.

How long is Adirondack Road over Mill Brook?

The structure is 23 ft (7 m) long with a longest span of 22 ft (6.7 m) and a deck 31 ft wide.

Who owns Adirondack Road over Mill Brook?

It is owned by the County Highway Agency.