US Bridges

Forge Hollow Road over Mill Brook

Poor

Essex County, New York · 1.5MI. N of Port Henry · Structure no. 000000003301780

Built
1930
95 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
247
2017 count
Owner
County
County Highway Agency

About this bridge

Forge Hollow Road over Mill Brook is a steel stringer/multi-beam or girder carrying Forge Hollow Road over Mill Brook in Essex County, New York. It was built in 1930, so it is 95 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 2 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 247 vehicles a day, roughly 10% of them trucks, projected to reach 346 by 2037. The structure is 35 ft (10.7 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesForge Hollow Road
CrossesMill Brook
Location1.5MI. N of Port Henry
RouteCity Street 0
Coordinates44.05261, -73.47973
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110.1 US tons
Inventory rating81 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span31 ft (9.4 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic247 (2017)
Projected traffic346 by 2037
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$571,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Forge Hollow Road over Mill Brook built?

It was built in 1930, making it 95 years old in 2025.

What condition is Forge Hollow Road over Mill Brook in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Forge Hollow Road over Mill Brook carry?

About 247 vehicles per day (2017 count), of which roughly 10% are trucks.

How long is Forge Hollow Road over Mill Brook?

The structure is 35 ft (10.7 m) long with a longest span of 31 ft (9.4 m) and a deck 20 ft wide.

Who owns Forge Hollow Road over Mill Brook?

It is owned by the County Highway Agency.