US Bridges

SR 18 New Castle R over Over Hog Back Run

Poor

Mercer County, Pennsylvania · Shenango Township · Structure no. 000000000025628

Built
1941
84 years old
Condition
Poor
inspected April 2024
Type
Tee Beam
Concrete
Length
85 ft
2 main spans
Daily traffic
7,414
2024 count
Owner
State
State Highway Agency

About this bridge

SR 18 New Castle R over Over Hog Back Run is a concrete tee beam carrying SR 18 New Castle R over Over Hog Back Run in Mercer County, Pennsylvania. It was built in 1941, so it is 84 years old, older 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 7,414 vehicles a day, roughly 5% of them trucks, projected to reach 8,852 by 2032. The structure is 85 ft (25.9 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 18 New Castle R
CrossesOver Hog Back Run
LocationShenango Township
RouteState Highway 18
CountyMercer County
StatePennsylvania
Coordinates41.18212, -80.45561
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length85 ft (25.9 m)
Longest span41 ft (12.5 m)
Deck width38 ft (11.5 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,414 (2024)
Projected traffic8,852 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$238,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 18 New Castle R over Over Hog Back Run built?

It was built in 1941, making it 84 years old in 2025.

What condition is SR 18 New Castle R over Over Hog Back Run 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 April 2024.

How much traffic does SR 18 New Castle R over Over Hog Back Run carry?

About 7,414 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is SR 18 New Castle R over Over Hog Back Run?

The structure is 85 ft (25.9 m) long with a longest span of 41 ft (12.5 m) and a deck 38 ft wide.

Who owns SR 18 New Castle R over Over Hog Back Run?

It is owned by the State Highway Agency.