US Bridges

Carman Road over RTE 908G

Good

Suffolk County, New York · 1.9 MI NE JCT SH110 & Nsp · Structure no. 000000001057350

Built
1949
76 years old
Condition
Good
inspected January 2024
Type
Frame
Concrete
Length
42 ft
1 main span
Daily traffic
4,093
2021 count
Owner
State
State Highway Agency

About this bridge

Carman Road over RTE 908G is a concrete frame carrying Carman Road over RTE 908G in Suffolk County, New York. It was built in 1949, so it is 76 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 4,093 vehicles a day, roughly 6% of them trucks, projected to reach 5,730 by 2041. The structure is 42 ft (12.8 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCarman Road
CrossesRTE 908G
Location1.9 MI NE JCT SH110 & Nsp
Coordinates40.80733, -73.38074
Functional classUrban Local

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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.6 US tons
Inventory rating29.5 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length42 ft (12.8 m)
Longest span35 ft (10.7 m)
Deck width43 ft (13.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,093 (2021)
Projected traffic5,730 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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$2.5 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Carman Road over RTE 908G built?

It was built in 1949, making it 76 years old in 2025.

What condition is Carman Road over RTE 908G 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 January 2024.

How much traffic does Carman Road over RTE 908G carry?

About 4,093 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is Carman Road over RTE 908G?

The structure is 42 ft (12.8 m) long with a longest span of 35 ft (10.7 m) and a deck 43 ft wide.

Who owns Carman Road over RTE 908G?

It is owned by the State Highway Agency.