US Bridges

Hollow Road over Zacharias Creek

Fair

Montgomery County, Pennsylvania · .3 M S of SR 73-3143C8 · Structure no. 000000000054282

Built
1930
95 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
58 ft
2 main spans
Daily traffic
500
2017 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Hollow Road over Zacharias Creek is a steel stringer/multi-beam or girder carrying Hollow Road over Zacharias Creek in Montgomery County, Pennsylvania. It was built in 1930, so it is 95 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 500 vehicles a day, roughly 2% of them trucks, projected to reach 700 by 2037. The structure is 58 ft (17.7 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHollow Road
CrossesZacharias Creek
Location.3 M S of SR 73-3143C8
CountyMontgomery County
StatePennsylvania
Coordinates40.20341, -75.35893
Functional classRural 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
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 inspectionMarch 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span25 ft (7.6 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2017)
Projected traffic700 by 2037
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hollow Road over Zacharias Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Hollow Road over Zacharias 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 March 2023.

How much traffic does Hollow Road over Zacharias Creek carry?

About 500 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Hollow Road over Zacharias Creek?

The structure is 58 ft (17.7 m) long with a longest span of 25 ft (7.6 m) and a deck 23 ft wide.

Who owns Hollow Road over Zacharias Creek?

It is owned by the Town or Township Highway Agency.