US Bridges

Speonk-Riverhd RD over 27 27 07051408 RTE 27

Good

Suffolk County, New York · 17 MI E Rts 112+27 · Structure no. 000000001056350

Built
1970
55 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
212 ft
2 main spans
Daily traffic
2,358
2020 count
Owner
State
State Highway Agency

About this bridge

Speonk-Riverhd RD over 27 27 07051408 RTE 27 is a steel stringer/multi-beam or girder carrying Speonk-Riverhd RD over 27 27 07051408 RTE 27 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,358 vehicles a day, roughly 13% of them trucks, projected to reach 2,864 by 2041. The structure is 212 ft (64.6 m) long and 45 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesSpeonk-Riverhd RD
Crosses27 27 07051408 RTE 27
Location17 MI E Rts 112+27
CountySuffolk County
StateNew York
Coordinates40.85262, -72.69683
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 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 alignment7: Better than present minimum criteria
Operating rating98 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length212 ft (64.6 m)
Longest span104 ft (31.6 m)
Deck width45 ft (13.7 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,358 (2020)
Projected traffic2,864 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5.6 mi (9 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$7.9 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Speonk-Riverhd RD over 27 27 07051408 RTE 27 built?

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

What condition is Speonk-Riverhd RD over 27 27 07051408 RTE 27 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Speonk-Riverhd RD over 27 27 07051408 RTE 27 carry?

About 2,358 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is Speonk-Riverhd RD over 27 27 07051408 RTE 27?

The structure is 212 ft (64.6 m) long with a longest span of 104 ft (31.6 m) and a deck 45 ft wide.

Who owns Speonk-Riverhd RD over 27 27 07051408 RTE 27?

It is owned by the State Highway Agency.