US Bridges

Mill Brook Road over Mill Brook

Fair

Ulster County, New York · 3.0 MI E of Grant Mills · Structure no. 000000003347010

Built
2001
24 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
51
2019 count
Owner
County
County Highway Agency

About this bridge

Mill Brook Road over Mill Brook is a steel stringer/multi-beam or girder carrying Mill Brook Road over Mill Brook in Ulster County, New York. It was built in 2001, so it is 24 years old, younger 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 51 vehicles a day, roughly 11% of them trucks, projected to reach 71 by 2039. The structure is 60 ft (18.3 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMill Brook Road
CrossesMill Brook
Location3.0 MI E of Grant Mills
CountyUlster County
StateNew York
Coordinates42.07943, -74.62675
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating70 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span59 ft (17.9 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2019)
Projected traffic71 by 2039
Trucks11%
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$1.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mill Brook Road over Mill Brook built?

It was built in 2001, making it 24 years old in 2025.

What condition is Mill Brook 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 December 2024.

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

About 51 vehicles per day (2019 count), of which roughly 11% are trucks.

How long is Mill Brook Road over Mill Brook?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (17.9 m) and a deck 22 ft wide.

Who owns Mill Brook Road over Mill Brook?

It is owned by the County Highway Agency.