US Bridges

Pa Tpk (I-76) over Glades Creek

Good

Somerset County, Pennsylvania · Near Brotherton · Structure no. 000000000031814

Built
2004
21 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
29,452
1999 count
Owner
Toll Authority
State Toll Authority

About this bridge

Pa Tpk (I-76) over Glades Creek is a prestressed concrete box beam or girders - multiple carrying Pa Tpk (I-76) over Glades Creek in Somerset County, Pennsylvania. It was built in 2004, so it is 21 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 29,452 vehicles a day, roughly 36% of them trucks, projected to reach 34,324 by 2030. The structure is 26 ft (7.9 m) long and 99 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesPa Tpk (I-76)
CrossesGlades Creek
LocationNear Brotherton
RouteInterstate 76
CountySomerset County
StatePennsylvania
Coordinates39.98333, -78.95167
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width99 ft (30.3 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,452 (1999)
Projected traffic34,324 by 2030
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$381,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa Tpk (I-76) over Glades Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Pa Tpk (I-76) over Glades Creek 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 April 2023.

How much traffic does Pa Tpk (I-76) over Glades Creek carry?

About 29,452 vehicles per day (1999 count), of which roughly 36% are trucks.

How long is Pa Tpk (I-76) over Glades Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 99 ft wide.

Who owns Pa Tpk (I-76) over Glades Creek?

It is owned by the State Toll Authority.