US Bridges

RTE I278 over Prospect Street

Fair

Kings County, New York · .2 MI SE I278 + Bklyn Brg · Structure no. 000000002230430

Built
1956
69 years old
Condition
Fair
inspected January 2024
Type
Frame
Concrete
Length
59 ft
1 main span
Daily traffic
25,425
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

RTE I278 over Prospect Street is a concrete frame carrying RTE I278 over Prospect Street in Kings County, New York. It was built in 1956, so it is 69 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 25,425 vehicles a day, roughly 8% of them trucks, projected to reach 32,488 by 2041. The structure is 59 ft (18 m) long and 19 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesRTE I278
CrossesProspect Street
Location.2 MI SE I278 + Bklyn Brg
RouteInterstate 278
Coordinates40.7007, -73.98884
Functional classUrban Principal Arterial - Interstate

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.
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 rating107.1 US tons
Inventory rating78.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length59 ft (18 m)
Longest span55 ft (16.7 m)
Deck width19 ft (5.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,425 (2020)
Projected traffic32,488 by 2041
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.9 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE I278 over Prospect Street built?

It was built in 1956, making it 69 years old in 2025.

What condition is RTE I278 over Prospect Street 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 January 2024.

How much traffic does RTE I278 over Prospect Street carry?

About 25,425 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is RTE I278 over Prospect Street?

The structure is 59 ft (18 m) long with a longest span of 55 ft (16.7 m) and a deck 19 ft wide.

Who owns RTE I278 over Prospect Street?

It is owned by the City or Municipal Highway Agency.