US Bridges

US 130 over Rocky Brook

Fair

Mercer County, New Jersey · 0.35 MI N of CR 571 JCT · Structure no. 1123152

Built
1936
89 years old, rebuilt 2006
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
35,803
2024 count
Owner
State
State Highway Agency

About this bridge

US 130 over Rocky Brook is a steel stringer/multi-beam or girder carrying US 130 over Rocky Brook in Mercer County, New Jersey. It was built in 1936 and reconstructed in 2006, so it is 89 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 5 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 35,803 vehicles a day, roughly 4% of them trucks, projected to reach 42,964 by 2044. The structure is 56 ft (17.1 m) long and 105 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS 130
CrossesRocky Brook
Location0.35 MI N of CR 571 JCT
RouteU.S. Route 130
CountyMercer County
StateNew Jersey
Coordinates40.27688, -74.53426
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating50.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length56 ft (17.1 m)
Longest span53 ft (16.2 m)
Deck width105 ft (31.9 m)
Roadway width90 ft (27.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,803 (2024)
Projected traffic42,964 by 2044
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$426,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 130 over Rocky Brook built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 2006.

What condition is US 130 over Rocky Brook 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 July 2024.

How much traffic does US 130 over Rocky Brook carry?

About 35,803 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is US 130 over Rocky Brook?

The structure is 56 ft (17.1 m) long with a longest span of 53 ft (16.2 m) and a deck 105 ft wide.

Who owns US 130 over Rocky Brook?

It is owned by the State Highway Agency.