US Bridges

Route 100 over High St. Norfolk South.

Fair

Montgomery County, Pennsylvania · Pottstown 3138E01 · Structure no. 000000000027298

Built
1954
71 years old, rebuilt 1982
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
455 ft
4 main spans
Daily traffic
37,098
2024 count
Owner
State
State Highway Agency

About this bridge

Route 100 over High St. Norfolk South. is a steel continuous stringer/multi-beam or girder carrying Route 100 over High St. Norfolk South. in Montgomery County, Pennsylvania. It was built in 1954 and reconstructed in 1982, so it is 71 years old, older 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 5 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 37,098 vehicles a day, roughly 11% of them trucks, projected to reach 36,018 by 2032. The structure is 455 ft (138.7 m) long and 63 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRoute 100
CrossesHigh St. Norfolk South.
LocationPottstown 3138E01
RouteState Highway 100
CountyMontgomery County
StatePennsylvania
Coordinates40.24769, -75.66094
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadHS 20
Structure length455 ft (138.7 m)
Longest span103 ft (31.4 m)
Deck width63 ft (19.2 m)
Roadway width55 ft (16.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,098 (2024)
Projected traffic36,018 by 2032
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.7 mi (6 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$593,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Route 100 over High St. Norfolk South. built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1982.

What condition is Route 100 over High St. Norfolk South. 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 May 2023.

How much traffic does Route 100 over High St. Norfolk South. carry?

About 37,098 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Route 100 over High St. Norfolk South.?

The structure is 455 ft (138.7 m) long with a longest span of 103 ft (31.4 m) and a deck 63 ft wide.

Who owns Route 100 over High St. Norfolk South.?

It is owned by the State Highway Agency.