US Bridges

Neiffer Road over Swamp Creek

Fair

Montgomery County, Pennsylvania · W of Zieglerv 3028H7 · Structure no. 000000000027817

Built
1966
59 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
118 ft
2 main spans
Daily traffic
2,159
2024 count
Owner
State
State Highway Agency

About this bridge

Neiffer Road over Swamp Creek is a prestressed concrete box beam or girders - multiple carrying Neiffer Road over Swamp Creek in Montgomery County, Pennsylvania. It was built in 1966, so it is 59 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 2,159 vehicles a day, roughly 8% of them trucks, projected to reach 1,564 by 2032. The structure is 118 ft (36 m) long and 38 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesNeiffer Road
CrossesSwamp Creek
LocationW of Zieglerv 3028H7
RouteState Highway 0
CountyMontgomery County
StatePennsylvania
Coordinates40.27261, -75.51454
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating93 US tons
Inventory rating50 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length118 ft (36 m)
Longest span66 ft (20.1 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,159 (2024)
Projected traffic1,564 by 2032
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Neiffer Road over Swamp Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Neiffer Road over Swamp Creek 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 July 2023.

How much traffic does Neiffer Road over Swamp Creek carry?

About 2,159 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Neiffer Road over Swamp Creek?

The structure is 118 ft (36 m) long with a longest span of 66 ft (20.1 m) and a deck 38 ft wide.

Who owns Neiffer Road over Swamp Creek?

It is owned by the State Highway Agency.