US Bridges

County Route 31 over 27 27 0705 1437 RTE 27

Fair

Suffolk County, New York · 20 MI E Rts 112+27 · Structure no. 000000001056369

Built
1971
54 years old, rebuilt 2011
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
281 ft
2 main spans
Daily traffic
16,256
2020 count
Owner
State
State Highway Agency

About this bridge

County Route 31 over 27 27 0705 1437 RTE 27 is a steel stringer/multi-beam or girder carrying County Route 31 over 27 27 0705 1437 RTE 27 in Suffolk County, New York. It was built in 1971 and reconstructed in 2011, so it is 54 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 16,256 vehicles a day, roughly 10% of them trucks, projected to reach 18,756 by 2041. The structure is 281 ft (85.6 m) long and 103 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Route 31
Crosses27 27 0705 1437 RTE 27
Location20 MI E Rts 112+27
RouteCounty Highway 0
CountySuffolk County
StateNew York
Coordinates40.86807, -72.64417
Functional classUrban Other Principal Arterial

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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length281 ft (85.6 m)
Longest span138 ft (42 m)
Deck width103 ft (31.4 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,256 (2020)
Projected traffic18,756 by 2041
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 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$23.7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Route 31 over 27 27 0705 1437 RTE 27 built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2011.

What condition is County Route 31 over 27 27 0705 1437 RTE 27 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 October 2023.

How much traffic does County Route 31 over 27 27 0705 1437 RTE 27 carry?

About 16,256 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County Route 31 over 27 27 0705 1437 RTE 27?

The structure is 281 ft (85.6 m) long with a longest span of 138 ft (42 m) and a deck 103 ft wide.

Who owns County Route 31 over 27 27 0705 1437 RTE 27?

It is owned by the State Highway Agency.