US Bridges

Inverness Lane over Terwood Run

Good

Montgomery County, Pennsylvania · .5 Mi. N. PA-63 3259-H10 · Structure no. 000000000048588

Built
2014
11 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
100
2014 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Inverness Lane over Terwood Run is a concrete culvert carrying Inverness Lane over Terwood Run in Montgomery County, Pennsylvania. It was built in 2014, so it is 11 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 4% of them trucks, projected to reach 125 by 2034. The structure is 21 ft (6.4 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesInverness Lane
CrossesTerwood Run
Location.5 Mi. N. PA-63 3259-H10
RouteCity Street 0
CountyMontgomery County
StatePennsylvania
Coordinates40.13107, -75.07978
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating57 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width28 ft (8.4 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2014)
Projected traffic125 by 2034
Trucks4%
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 Inverness Lane over Terwood Run built?

It was built in 2014, making it 11 years old in 2025.

What condition is Inverness Lane over Terwood Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does Inverness Lane over Terwood Run carry?

About 100 vehicles per day (2014 count), of which roughly 4% are trucks.

How long is Inverness Lane over Terwood Run?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 28 ft wide.

Who owns Inverness Lane over Terwood Run?

It is owned by the Town or Township Highway Agency.