US Bridges

Raritan River over Lyman Street/River Road

Fair

Somerset County, New Jersey · 0.1 MI S. of CR 567 · Structure no. 18E0809

Built
2005
20 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
303 ft
2 main spans
Daily traffic
7,795
2023 count
Owner
County
County Highway Agency

About this bridge

Raritan River over Lyman Street/River Road is a steel continuous stringer/multi-beam or girder carrying Raritan River over Lyman Street/River Road in Somerset County, New Jersey. It was built in 2005, so it is 20 years old, younger 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 7,795 vehicles a day, roughly 3% of them trucks, projected to reach 9,354 by 2043. The structure is 303 ft (92.4 m) long and 44 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesRaritan River
CrossesLyman Street/River Road
Location0.1 MI S. of CR 567
RouteCounty Highway 625
Coordinates40.56438, -74.63677
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length303 ft (92.4 m)
Longest span145 ft (44.2 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,795 (2023)
Projected traffic9,354 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Raritan River over Lyman Street/River Road built?

It was built in 2005, making it 20 years old in 2025.

What condition is Raritan River over Lyman Street/River Road 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 Raritan River over Lyman Street/River Road carry?

About 7,795 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Raritan River over Lyman Street/River Road?

The structure is 303 ft (92.4 m) long with a longest span of 145 ft (44.2 m) and a deck 44 ft wide.

Who owns Raritan River over Lyman Street/River Road?

It is owned by the County Highway Agency.