US Bridges

County Road 21 over Roeliff Jansen Kl

Fair

Columbia County, New York · .5 Mile NW of N Hillsdale · Structure no. 000000003342480

Built
1930
95 years old
Condition
Fair
inspected December 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
566
2017 count
Owner
County
County Highway Agency

About this bridge

County Road 21 over Roeliff Jansen Kl is a prestressed concrete box beam or girders - multiple carrying County Road 21 over Roeliff Jansen Kl in Columbia County, New York. It was built in 1930, so it is 95 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 6 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 566 vehicles a day, roughly 15% of them trucks, projected to reach 792 by 2037. The structure is 44 ft (13.4 m) long and 29 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

Open in Google Maps
CarriesCounty Road 21
CrossesRoeliff Jansen Kl
Location.5 Mile NW of N Hillsdale
RouteCounty Highway 0
CountyColumbia County
StateNew York
Coordinates42.23998, -73.51464
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 rating110.1 US tons
Inventory rating77.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span40 ft (12.1 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic566 (2017)
Projected traffic792 by 2037
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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$920,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 21 over Roeliff Jansen Kl built?

It was built in 1930, making it 95 years old in 2025.

What condition is County Road 21 over Roeliff Jansen Kl 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 2023.

How much traffic does County Road 21 over Roeliff Jansen Kl carry?

About 566 vehicles per day (2017 count), of which roughly 15% are trucks.

How long is County Road 21 over Roeliff Jansen Kl?

The structure is 44 ft (13.4 m) long with a longest span of 40 ft (12.1 m) and a deck 29 ft wide.

Who owns County Road 21 over Roeliff Jansen Kl?

It is owned by the County Highway Agency.