US Bridges

SR 18 (7th Ave) NB over Nsrc CSX Beaver River

Poor

Beaver County, Pennsylvania · 0.2 MI NW of 5th Ave · Structure no. 000000000003449

Built
1986
39 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,310 ft
6 main spans
Daily traffic
4,808
2023 count
Owner
State
State Highway Agency

About this bridge

SR 18 (7th Ave) NB over Nsrc CSX Beaver River is a prestressed concrete stringer/multi-beam or girder carrying SR 18 (7th Ave) NB over Nsrc CSX Beaver River in Beaver County, Pennsylvania. It was built in 1986, so it is 39 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 4,808 vehicles a day, roughly 10% of them trucks, projected to reach 5,827 by 2032. The structure is 1,310 ft (399.3 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSR 18 (7th Ave) NB
CrossesNsrc CSX Beaver River
Location0.2 MI NW of 5th Ave
RouteState Highway 18
CountyBeaver County
StatePennsylvania
Coordinates40.74112, -80.31974
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6 (+5 approach)
Design loadHS 20 + Mod
Structure length1,310 ft (399.3 m)
Longest span150 ft (45.7 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,808 (2023)
Projected traffic5,827 by 2032
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway, waterway and railroad
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$729,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 18 (7th Ave) NB over Nsrc CSX Beaver River built?

It was built in 1986, making it 39 years old in 2025.

What condition is SR 18 (7th Ave) NB over Nsrc CSX Beaver River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does SR 18 (7th Ave) NB over Nsrc CSX Beaver River carry?

About 4,808 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SR 18 (7th Ave) NB over Nsrc CSX Beaver River?

The structure is 1,310 ft (399.3 m) long with a longest span of 150 ft (45.7 m) and a deck 35 ft wide.

Who owns SR 18 (7th Ave) NB over Nsrc CSX Beaver River?

It is owned by the State Highway Agency.