US Bridges

27 Col-Dst RD over County Road 51 County R

Fair

Suffolk County, New York · 14.1 MI E SH 112 & SH 27 · Structure no. 000000001056320

Built
1970
55 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
366 ft
4 main spans
Daily traffic
7,379
2018 count
Owner
State
State Highway Agency

About this bridge

27 Col-Dst RD over County Road 51 County R is a steel stringer/multi-beam or girder carrying 27 Col-Dst RD over County Road 51 County R in Suffolk County, New York. It was built in 1970, so it is 55 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 7,379 vehicles a day, roughly 2% of them trucks, projected to reach 8,777 by 2041. The structure is 366 ft (111.6 m) long and 44 ft wide.

Location

Open in Google Maps
Carries27 Col-Dst RD
CrossesCounty Road 51 County R
Location14.1 MI E SH 112 & SH 27
RouteState Highway 0
CountySuffolk County
StateNew York
Coordinates40.83339, -72.74764
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating35.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length366 ft (111.6 m)
Longest span126 ft (38.4 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,379 (2018)
Projected traffic8,777 by 2041
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$11.2 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 27 Col-Dst RD over County Road 51 County R built?

It was built in 1970, making it 55 years old in 2025.

What condition is 27 Col-Dst RD over County Road 51 County R 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 August 2023.

How much traffic does 27 Col-Dst RD over County Road 51 County R carry?

About 7,379 vehicles per day (2018 count), of which roughly 2% are trucks.

How long is 27 Col-Dst RD over County Road 51 County R?

The structure is 366 ft (111.6 m) long with a longest span of 126 ft (38.4 m) and a deck 44 ft wide.

Who owns 27 Col-Dst RD over County Road 51 County R?

It is owned by the State Highway Agency.