US Bridges

Nsi & Sni Roadways over Monmouth Street

Fair

Mercer County, New Jersey · 0.5 MI North of Int. 8 · Structure no. M068010

Built
1950
75 years old, rebuilt 1955
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
106 ft
3 main spans
Daily traffic
99,482
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

Nsi & Sni Roadways over Monmouth Street is a steel stringer/multi-beam or girder carrying Nsi & Sni Roadways over Monmouth Street in Mercer County, New Jersey. It was built in 1950 and reconstructed in 1955, so it is 75 years old, older than the New Jersey average of 58.5 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 99,482 vehicles a day, roughly 1% of them trucks, projected to reach 195,752 by 2043. The structure is 106 ft (32.3 m) long and 128 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNsi & Sni Roadways
CrossesMonmouth Street
Location0.5 MI North of Int. 8
RouteInterstate 95
CountyMercer County
StateNew Jersey
Coordinates40.27049, -74.50882
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length106 ft (32.3 m)
Longest span42 ft (12.8 m)
Deck width128 ft (39 m)
Roadway width122 ft (37.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99,482 (2023)
Projected traffic195,752 by 2043
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nsi & Sni Roadways over Monmouth Street built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1955.

What condition is Nsi & Sni Roadways over Monmouth 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 April 2023.

How much traffic does Nsi & Sni Roadways over Monmouth Street carry?

About 99,482 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Nsi & Sni Roadways over Monmouth Street?

The structure is 106 ft (32.3 m) long with a longest span of 42 ft (12.8 m) and a deck 128 ft wide.

Who owns Nsi & Sni Roadways over Monmouth Street?

It is owned by the State Toll Authority.