US Bridges

Old Gulph Road over Mill Creek

Fair

Montgomery County, Pennsylvania · Gulph;roberts Rd. 35D10 · Structure no. 000000000027979

Built
1930
95 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Concrete
Length
30 ft
1 main span
Daily traffic
7,673
2019 count
Owner
County
County Highway Agency

About this bridge

Old Gulph Road over Mill Creek is a concrete arch - deck carrying Old Gulph Road over Mill 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 7,673 vehicles a day, roughly 18% of them trucks, projected to reach 5,721 by 2015. The structure is 30 ft (9.1 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesOld Gulph Road
CrossesMill Creek
LocationGulph;roberts Rd. 35D10
RouteCity Street 0
CountyMontgomery County
StatePennsylvania
Coordinates40.03207, -75.31542
Functional classRural Minor 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
Superstructure7 GoodSome minor problems.
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span20 ft (6.1 m)
Deck width50 ft (15.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,673 (2019)
Projected traffic5,721 by 2015
Trucks18%
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

OwnerCounty Highway Agency
Maintained byCounty 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 Old Gulph Road over Mill Creek built?

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

What condition is Old Gulph Road over Mill 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 April 2024.

How much traffic does Old Gulph Road over Mill Creek carry?

About 7,673 vehicles per day (2019 count), of which roughly 18% are trucks.

How long is Old Gulph Road over Mill Creek?

The structure is 30 ft (9.1 m) long with a longest span of 20 ft (6.1 m) and a deck 50 ft wide.

Who owns Old Gulph Road over Mill Creek?

It is owned by the County Highway Agency.