US Bridges

Congo Road over Swamp Creek

PoorPosted for load

Montgomery County, Pennsylvania · Gilbertsville 2915D9 · Structure no. 000000000027583

Built
1954
71 years old
Condition
Poor
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
1,619
2024 count
Owner
State
State Highway Agency

About this bridge

Congo Road over Swamp Creek is a steel stringer/multi-beam or girder carrying Congo Road over Swamp Creek in Montgomery County, Pennsylvania. It was built in 1954, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 1,619 vehicles a day, roughly 8% of them trucks, projected to reach 1,523 by 2032. The structure is 63 ft (19.2 m) long and 34 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesCongo Road
CrossesSwamp Creek
LocationGilbertsville 2915D9
RouteState Highway 0
Coordinates40.32398, -75.60538
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating22 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span61 ft (18.6 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,619 (2024)
Projected traffic1,523 by 2032
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$174,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Congo Road over Swamp Creek built?

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

What condition is Congo Road over Swamp Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does Congo Road over Swamp Creek carry?

About 1,619 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Congo Road over Swamp Creek?

The structure is 63 ft (19.2 m) long with a longest span of 61 ft (18.6 m) and a deck 34 ft wide.

Who owns Congo Road over Swamp Creek?

It is owned by the State Highway Agency.