US Bridges

T-421 over Pa Tpk (I-76)

Good

Bedford County, Pennsylvania · West of Kegg · Structure no. 000000000048793

Built
2013
12 years old
Condition
Good
inspected August 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
164 ft
2 main spans
Daily traffic
58
2014 count
Owner
Toll Authority
State Toll Authority

About this bridge

T-421 over Pa Tpk (I-76) is a prestressed concrete continuous box beam or girders - multiple carrying T-421 over Pa Tpk (I-76) in Bedford County, Pennsylvania. It was built in 2013, so it is 12 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 58 vehicles a day, roughly 6% of them trucks, projected to reach 78 by 2034. The structure is 164 ft (50 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesT-421
CrossesPa Tpk (I-76)
LocationWest of Kegg
RouteCity Street 0
Coordinates39.975, -78.74
Functional classRural 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.5 US tons
Inventory rating38.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length164 ft (50 m)
Longest span82 ft (25 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic58 (2014)
Projected traffic78 by 2034
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 T-421 over Pa Tpk (I-76) built?

It was built in 2013, making it 12 years old in 2025.

What condition is T-421 over Pa Tpk (I-76) 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 2022.

How much traffic does T-421 over Pa Tpk (I-76) carry?

About 58 vehicles per day (2014 count), of which roughly 6% are trucks.

How long is T-421 over Pa Tpk (I-76)?

The structure is 164 ft (50 m) long with a longest span of 82 ft (25 m) and a deck 37 ft wide.

Who owns T-421 over Pa Tpk (I-76)?

It is owned by the State Toll Authority.