US Bridges

Blair Mill Road over Brch Pennypack CR/3259A2

Fair

Montgomery County, Pennsylvania · Upper Moreland · Structure no. 000000000027641

Built
1958
67 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
11,408
2024 count
Owner
State
State Highway Agency

About this bridge

Blair Mill Road over Brch Pennypack CR/3259A2 is a prestressed concrete stringer/multi-beam or girder carrying Blair Mill Road over Brch Pennypack CR/3259A2 in Montgomery County, Pennsylvania. It was built in 1958, so it is 67 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 11,408 vehicles a day, roughly 6% of them trucks, projected to reach 20,069 by 2032. The structure is 43 ft (13.1 m) long and 63 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesBlair Mill Road
CrossesBrch Pennypack CR/3259A2
LocationUpper Moreland
RouteState Highway 0
CountyMontgomery County
StatePennsylvania
Coordinates40.1774, -75.12176
Functional classUrban Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 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 geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width63 ft (19.1 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,408 (2024)
Projected traffic20,069 by 2032
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Blair Mill Road over Brch Pennypack CR/3259A2 built?

It was built in 1958, making it 67 years old in 2025.

What condition is Blair Mill Road over Brch Pennypack CR/3259A2 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 Blair Mill Road over Brch Pennypack CR/3259A2 carry?

About 11,408 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Blair Mill Road over Brch Pennypack CR/3259A2?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 63 ft wide.

Who owns Blair Mill Road over Brch Pennypack CR/3259A2?

It is owned by the State Highway Agency.