US Bridges

RTE 66 over Black Brook

Fair

Rensselaer County, New York · 0.2 MI N of E.Nassau · Structure no. 000000001029090

Built
1928
97 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
1,505
2015 count
Owner
State
State Highway Agency

About this bridge

RTE 66 over Black Brook is a concrete slab carrying RTE 66 over Black Brook in Rensselaer County, New York. It was built in 1928, so it is 97 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 1,505 vehicles a day, roughly 11% of them trucks, projected to reach 1,570 by 2041. The structure is 24 ft (7.3 m) long and 33 ft wide. If it were closed, the detour would be 15.5 mi (25 km).

Location

Open in Google Maps
CarriesRTE 66
CrossesBlack Brook
Location0.2 MI N of E.Nassau
RouteState Highway 66
CountyRensselaer County
StateNew York
Coordinates42.51272, -73.50905
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79 US tons
Inventory rating47 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadOther
Structure length24 ft (7.3 m)
Longest span20 ft (6 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,505 (2015)
Projected traffic1,570 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed15.5 mi (25 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$867,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 66 over Black Brook built?

It was built in 1928, making it 97 years old in 2025.

What condition is RTE 66 over Black 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 May 2024.

How much traffic does RTE 66 over Black Brook carry?

About 1,505 vehicles per day (2015 count), of which roughly 11% are trucks.

How long is RTE 66 over Black Brook?

The structure is 24 ft (7.3 m) long with a longest span of 20 ft (6 m) and a deck 33 ft wide.

Who owns RTE 66 over Black Brook?

It is owned by the State Highway Agency.