US Bridges

Knight Road over Green Lane Reservoir

Good

Montgomery County, Pennsylvania · 0.5 MI SE SR633 2916-J1 · Structure no. 000000000053713

Built
2016
9 years old
Condition
Good
inspected December 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
83 ft
1 main span
Daily traffic
2,568
2019 count
Owner
County
County Highway Agency

About this bridge

Knight Road over Green Lane Reservoir is a prestressed concrete box beam or girders - multiple carrying Knight Road over Green Lane Reservoir in Montgomery County, Pennsylvania. It was built in 2016, so it is 9 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 2,568 vehicles a day, roughly 34% of them trucks, projected to reach 3,133 by 2039. The structure is 83 ft (25.3 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesKnight Road
CrossesGreen Lane Reservoir
Location0.5 MI SE SR633 2916-J1
CountyMontgomery County
StatePennsylvania
Coordinates40.3693, -75.51115
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating38.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length83 ft (25.3 m)
Longest span82 ft (25 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,568 (2019)
Projected traffic3,133 by 2039
Trucks34%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Knight Road over Green Lane Reservoir built?

It was built in 2016, making it 9 years old in 2025.

What condition is Knight Road over Green Lane Reservoir 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 December 2022.

How much traffic does Knight Road over Green Lane Reservoir carry?

About 2,568 vehicles per day (2019 count), of which roughly 34% are trucks.

How long is Knight Road over Green Lane Reservoir?

The structure is 83 ft (25.3 m) long with a longest span of 82 ft (25 m) and a deck 32 ft wide.

Who owns Knight Road over Green Lane Reservoir?

It is owned by the County Highway Agency.