US Bridges

SR 173 Liberty ST over Swamp Run

Good

Mercer County, Pennsylvania · Pine Twp · Structure no. 000000000048757

Built
2014
11 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
4,083
2024 count
Owner
State
State Highway Agency

About this bridge

SR 173 Liberty ST over Swamp Run is a prestressed concrete box beam or girders - multiple carrying SR 173 Liberty ST over Swamp Run in Mercer County, Pennsylvania. It was built in 2014, so it is 11 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,083 vehicles a day, roughly 11% of them trucks, projected to reach 6,576 by 2032. The structure is 63 ft (19.2 m) long and 36 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSR 173 Liberty ST
CrossesSwamp Run
LocationPine Twp
RouteState Highway 173
CountyMercer County
StatePennsylvania
Coordinates41.13494, -80.0758
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
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 rating52.1 US tons
Inventory rating40 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length63 ft (19.2 m)
Longest span60 ft (18.3 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,083 (2024)
Projected traffic6,576 by 2032
Trucks11%
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

OwnerState Highway Agency
Maintained byState 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 SR 173 Liberty ST over Swamp Run built?

It was built in 2014, making it 11 years old in 2025.

What condition is SR 173 Liberty ST over Swamp Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does SR 173 Liberty ST over Swamp Run carry?

About 4,083 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is SR 173 Liberty ST over Swamp Run?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.3 m) and a deck 36 ft wide.

Who owns SR 173 Liberty ST over Swamp Run?

It is owned by the State Highway Agency.