US Bridges

Stone Street over Mill Brook

Fair

Essex County, New York · Port Henry · Structure no. 000000003301770

Built
1926
99 years old, rebuilt 2010
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
517
2017 count
Owner
County
County Highway Agency

About this bridge

Stone Street over Mill Brook is a prestressed concrete box beam or girders - multiple carrying Stone Street over Mill Brook in Essex County, New York. It was built in 1926 and reconstructed in 2010, so it is 99 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 517 vehicles a day, roughly 2% of them trucks, projected to reach 724 by 2037. The structure is 32 ft (9.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesStone Street
CrossesMill Brook
LocationPort Henry
Coordinates44.04948, -73.46796
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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating110.1 US tons
Inventory rating69 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.4 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic517 (2017)
Projected traffic724 by 2037
Trucks2%
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$855,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Stone Street over Mill Brook built?

It was built in 1926, making it 99 years old in 2025. It was reconstructed in 2010.

What condition is Stone Street 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 Stone Street over Mill Brook carry?

About 517 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Stone Street over Mill Brook?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns Stone Street over Mill Brook?

It is owned by the County Highway Agency.