US Bridges

I-376 NB Beaver over Over SR 18 N/Sb New Cast

Fair

Mercer County, Pennsylvania · Shenango Township · Structure no. 000000000025685

Built
1974
51 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
177 ft
3 main spans
Daily traffic
6,817
2024 count
Owner
State
State Highway Agency

About this bridge

I-376 NB Beaver over Over SR 18 N/Sb New Cast is a prestressed concrete stringer/multi-beam or girder carrying I-376 NB Beaver over Over SR 18 N/Sb New Cast in Mercer County, Pennsylvania. It was built in 1974, so it is 51 years old, younger than the Pennsylvania average of 54.8 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 6,817 vehicles a day, roughly 11% of them trucks, projected to reach 9,827 by 2032. The structure is 177 ft (53.9 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI-376 NB Beaver
CrossesOver SR 18 N/Sb New Cast
LocationShenango Township
RouteInterstate 376
CountyMercer County
StatePennsylvania
Coordinates41.16138, -80.43305
Functional classRural 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating22 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length177 ft (53.9 m)
Longest span103 ft (31.4 m)
Deck width44 ft (13.4 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,817 (2024)
Projected traffic9,827 by 2032
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$109,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-376 NB Beaver over Over SR 18 N/Sb New Cast built?

It was built in 1974, making it 51 years old in 2025.

What condition is I-376 NB Beaver over Over SR 18 N/Sb New Cast 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 2024.

How much traffic does I-376 NB Beaver over Over SR 18 N/Sb New Cast carry?

About 6,817 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is I-376 NB Beaver over Over SR 18 N/Sb New Cast?

The structure is 177 ft (53.9 m) long with a longest span of 103 ft (31.4 m) and a deck 44 ft wide.

Who owns I-376 NB Beaver over Over SR 18 N/Sb New Cast?

It is owned by the State Highway Agency.