US Bridges

Plank Road over Black Brook

Good

Sullivan County, New York · 0.5 MI W of Forestburg · Structure no. 000000003356600

Built
1999
26 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
49 ft
1 main span
Daily traffic
59
2018 count
Owner
County
County Highway Agency

About this bridge

Plank Road over Black Brook is a prestressed concrete box beam or girders - multiple carrying Plank Road over Black Brook in Sullivan County, New York. It was built in 1999, so it is 26 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 59 vehicles a day, roughly 4% of them trucks, projected to reach 83 by 2038. The structure is 49 ft (14.9 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesPlank Road
CrossesBlack Brook
Location0.5 MI W of Forestburg
Coordinates41.54456, -74.76002
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating91.1 US tons
Inventory rating54 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length49 ft (14.9 m)
Longest span46 ft (14 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59 (2018)
Projected traffic83 by 2038
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$813,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Plank Road over Black Brook built?

It was built in 1999, making it 26 years old in 2025.

What condition is Plank Road over Black Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Plank Road over Black Brook carry?

About 59 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is Plank Road over Black Brook?

The structure is 49 ft (14.9 m) long with a longest span of 46 ft (14 m) and a deck 24 ft wide.

Who owns Plank Road over Black Brook?

It is owned by the County Highway Agency.