US Bridges

Summit Avenue over T.R.309 By-Pass

Good

Montgomery County, Pennsylvania · .5MI N.Pa.Tpk 3257-H08 · Structure no. 000000000041701

Built
2002
23 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
135 ft
1 main span
Daily traffic
478
2023 count
Owner
State
State Highway Agency

About this bridge

Summit Avenue over T.R.309 By-Pass is a steel stringer/multi-beam or girder carrying Summit Avenue over T.R.309 By-Pass in Montgomery County, Pennsylvania. It was built in 2002, so it is 23 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 478 vehicles a day, roughly 3% of them trucks, projected to reach 4,590 by 2032. The structure is 135 ft (41.1 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSummit Avenue
CrossesT.R.309 By-Pass
Location.5MI N.Pa.Tpk 3257-H08
RouteState Highway 0
CountyMontgomery County
StatePennsylvania
Coordinates40.14222, -75.20278
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating55 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length135 ft (41.1 m)
Longest span129 ft (39.3 m)
Deck width44 ft (13.3 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic478 (2023)
Projected traffic4,590 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Summit Avenue over T.R.309 By-Pass built?

It was built in 2002, making it 23 years old in 2025.

What condition is Summit Avenue over T.R.309 By-Pass 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 August 2024.

How much traffic does Summit Avenue over T.R.309 By-Pass carry?

About 478 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Summit Avenue over T.R.309 By-Pass?

The structure is 135 ft (41.1 m) long with a longest span of 129 ft (39.3 m) and a deck 44 ft wide.

Who owns Summit Avenue over T.R.309 By-Pass?

It is owned by the State Highway Agency.