US Bridges

Clahor Avenue over Donny Brook

Fair

Montgomery County, Pennsylvania · 0.33MI NW SR0029 3253-G1 · Structure no. 000000000028205

Built
1986
39 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
1,480
2012 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Clahor Avenue over Donny Brook is a concrete culvert carrying Clahor Avenue over Donny Brook in Montgomery County, Pennsylvania. It was built in 1986, so it is 39 years old, younger 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 1,480 vehicles a day, roughly 1% of them trucks, projected to reach 1,880 by 2032. The structure is 32 ft (9.8 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesClahor Avenue
CrossesDonny Brook
Location0.33MI NW SR0029 3253-G1
RouteCity Street 0
CountyMontgomery County
StatePennsylvania
Coordinates40.18181, -75.46151
Functional classUrban 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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span14 ft (4.3 m)
Deck width42 ft (12.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,480 (2012)
Projected traffic1,880 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Clahor Avenue over Donny Brook built?

It was built in 1986, making it 39 years old in 2025.

What condition is Clahor Avenue over Donny Brook 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 Clahor Avenue over Donny Brook carry?

About 1,480 vehicles per day (2012 count), of which roughly 1% are trucks.

How long is Clahor Avenue over Donny Brook?

The structure is 32 ft (9.8 m) long with a longest span of 14 ft (4.3 m) and a deck 42 ft wide.

Who owns Clahor Avenue over Donny Brook?

It is owned by the Town or Township Highway Agency.