US Bridges

Black Bridge Road over Dover Kill

PoorPosted for load

Columbia County, New York · 0.5 MI NW of Snyderville · Structure no. 000000003222760

Built
1936
89 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
30
2021 count
Owner
County
County Highway Agency

About this bridge

Black Bridge Road over Dover Kill is a steel stringer/multi-beam or girder carrying Black Bridge Road over Dover Kill in Columbia County, New York. It was built in 1936, so it is 89 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 4 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. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, roughly 7% of them trucks, projected to reach 42 by 2041. The structure is 28 ft (8.5 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBlack Bridge Road
CrossesDover Kill
Location0.5 MI NW of Snyderville
Coordinates42.08919, -73.77168
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating36 US tons
Inventory rating22 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width21 ft (6.3 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2021)
Projected traffic42 by 2041
Trucks7%
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$656,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Black Bridge Road over Dover Kill built?

It was built in 1936, making it 89 years old in 2025.

What condition is Black Bridge Road over Dover Kill 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 June 2024.

How much traffic does Black Bridge Road over Dover Kill carry?

About 30 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Black Bridge Road over Dover Kill?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 21 ft wide.

Who owns Black Bridge Road over Dover Kill?

It is owned by the County Highway Agency.