US Bridges

Traffic Route 100 over Schuylkill Riv./River RD

Fair

Montgomery County, Pennsylvania · N. of 422 11D11/3138E2 · Structure no. 000000000027296

Built
1954
71 years old, rebuilt 2012
Condition
Fair
inspected November 2022
Type
Girder and Floorbeam System
Steel Continuous
Length
817 ft
5 main spans
Daily traffic
37,098
2024 count
Owner
State
State Highway Agency

About this bridge

Traffic Route 100 over Schuylkill Riv./River RD is a steel continuous girder and floorbeam system carrying Traffic Route 100 over Schuylkill Riv./River RD in Montgomery County, Pennsylvania. It was built in 1954 and reconstructed in 2012, 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 817 ft (249 m) long and 60 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesTraffic Route 100
CrossesSchuylkill Riv./River RD
LocationN. of 422 11D11/3138E2
RouteState Highway 100
Coordinates40.2425, -75.65948
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
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length817 ft (249 m)
Longest span185 ft (56.4 m)
Deck width60 ft (18.4 m)
Roadway width53 ft (16.3 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 waterway
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$5.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Traffic Route 100 over Schuylkill Riv./River RD built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2012.

What condition is Traffic Route 100 over Schuylkill Riv./River RD 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 November 2022.

How much traffic does Traffic Route 100 over Schuylkill Riv./River RD carry?

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

How long is Traffic Route 100 over Schuylkill Riv./River RD?

The structure is 817 ft (249 m) long with a longest span of 185 ft (56.4 m) and a deck 60 ft wide.

Who owns Traffic Route 100 over Schuylkill Riv./River RD?

It is owned by the State Highway Agency.