US Bridges

Grosstown Road over Norfolk Southern (hsb)

Fair

Montgomery County, Pennsylvania · .4 MI N US-422 3137-K1 · Structure no. 000000000040115

Built
1996
29 years old
Condition
Fair
inspected October 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
157 ft
3 main spans
Daily traffic
5,300
2009 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Grosstown Road over Norfolk Southern (hsb) is a prestressed concrete continuous box beam or girders - multiple carrying Grosstown Road over Norfolk Southern (hsb) in Montgomery County, Pennsylvania. It was built in 1996, so it is 29 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 6 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 5,300 vehicles a day, roughly 2% of them trucks, projected to reach 6,641 by 2032. The structure is 157 ft (47.9 m) long and 38 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesGrosstown Road
CrossesNorfolk Southern (hsb)
Location.4 MI N US-422 3137-K1
RouteCity Street 0
CountyMontgomery County
StatePennsylvania
Coordinates40.24528, -75.68904
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating78 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length157 ft (47.9 m)
Longest span65 ft (19.8 m)
Deck width38 ft (11.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,300 (2009)
Projected traffic6,641 by 2032
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Grosstown Road over Norfolk Southern (hsb) built?

It was built in 1996, making it 29 years old in 2025.

What condition is Grosstown Road over Norfolk Southern (hsb) 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 October 2022.

How much traffic does Grosstown Road over Norfolk Southern (hsb) carry?

About 5,300 vehicles per day (2009 count), of which roughly 2% are trucks.

How long is Grosstown Road over Norfolk Southern (hsb)?

The structure is 157 ft (47.9 m) long with a longest span of 65 ft (19.8 m) and a deck 38 ft wide.

Who owns Grosstown Road over Norfolk Southern (hsb)?

It is owned by the Town or Township Highway Agency.