US Bridges

RTE 27 over County Road 104 County

Fair

Suffolk County, New York · 21.3 MI E Rts 112+27 · Structure no. 000000001056371

Built
1973
52 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
123 ft
1 main span
Daily traffic
17,379
2019 count
Owner
State
State Highway Agency

About this bridge

RTE 27 over County Road 104 County is a steel stringer/multi-beam or girder carrying RTE 27 over County Road 104 County in Suffolk County, New York. It was built in 1973, so it is 52 years old, younger 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 17,379 vehicles a day, roughly 6% of them trucks, projected to reach 20,671 by 2041. The structure is 123 ft (37.5 m) long and 54 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE 27
CrossesCounty Road 104 County
Location21.3 MI E Rts 112+27
RouteState Highway 27
CountySuffolk County
StateNew York
Coordinates40.87063, -72.61675
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length123 ft (37.5 m)
Longest span121 ft (36.8 m)
Deck width54 ft (16.5 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,379 (2019)
Projected traffic20,671 by 2041
Trucks6%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
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$7.1 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE 27 over County Road 104 County built?

It was built in 1973, making it 52 years old in 2025.

What condition is RTE 27 over County Road 104 County 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 September 2023.

How much traffic does RTE 27 over County Road 104 County carry?

About 17,379 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is RTE 27 over County Road 104 County?

The structure is 123 ft (37.5 m) long with a longest span of 121 ft (36.8 m) and a deck 54 ft wide.

Who owns RTE 27 over County Road 104 County?

It is owned by the State Highway Agency.