US Bridges

County Line Expwy over South Trooper Road

Good

Montgomery County, Pennsylvania · W. Norriton 27J9/3366C3 · Structure no. 000000000056664

Built
2019
6 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
114 ft
1 main span
Daily traffic
150,726
2024 count
Owner
State
State Highway Agency

About this bridge

County Line Expwy over South Trooper Road is a prestressed concrete stringer/multi-beam or girder carrying County Line Expwy over South Trooper Road in Montgomery County, Pennsylvania. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 150,726 vehicles a day, roughly 5% of them trucks, projected to reach 104,348 by 2032. The structure is 114 ft (34.7 m) long and 150 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesCounty Line Expwy
CrossesSouth Trooper Road
LocationW. Norriton 27J9/3366C3
RouteU.S. Route 422
CountyMontgomery County
StatePennsylvania
Coordinates40.10902, -75.42012
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating42.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length114 ft (34.7 m)
Longest span110 ft (33.5 m)
Deck width150 ft (45.7 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150,726 (2024)
Projected traffic104,348 by 2032
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed11.2 mi (18 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Line Expwy over South Trooper Road built?

It was built in 2019, making it 6 years old in 2025.

What condition is County Line Expwy over South Trooper Road 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 February 2023.

How much traffic does County Line Expwy over South Trooper Road carry?

About 150,726 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is County Line Expwy over South Trooper Road?

The structure is 114 ft (34.7 m) long with a longest span of 110 ft (33.5 m) and a deck 150 ft wide.

Who owns County Line Expwy over South Trooper Road?

It is owned by the State Highway Agency.