US Bridges

Pa 772 Marietta Av over AMTRAK

Good

Lancaster County, Pennsylvania · Mount Joy Boro · Structure no. 000000000021319

Built
1896
129 years old, rebuilt 2015
Condition
Good
inspected December 2023
Type
Girder and Floorbeam System
Steel
Length
124 ft
1 main span
Daily traffic
507
2024 count
Owner
State
State Highway Agency

About this bridge

Pa 772 Marietta Av over AMTRAK is a steel girder and floorbeam system carrying Pa 772 Marietta Av over AMTRAK in Lancaster County, Pennsylvania. It was built in 1896 and reconstructed in 2015, so it is 129 years old, older 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 507 vehicles a day, roughly 3% of them trucks, projected to reach 6,810 by 2035. The structure is 124 ft (37.8 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesPa 772 Marietta Av
CrossesAMTRAK
LocationMount Joy Boro
RouteState Highway 772
Coordinates40.1087, -76.50196
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating51 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length124 ft (37.8 m)
Longest span115 ft (35.1 m)
Deck width31 ft (9.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic507 (2024)
Projected traffic6,810 by 2035
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pa 772 Marietta Av over AMTRAK built?

It was built in 1896, making it 129 years old in 2025. It was reconstructed in 2015.

What condition is Pa 772 Marietta Av over AMTRAK 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 2023.

How much traffic does Pa 772 Marietta Av over AMTRAK carry?

About 507 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Pa 772 Marietta Av over AMTRAK?

The structure is 124 ft (37.8 m) long with a longest span of 115 ft (35.1 m) and a deck 31 ft wide.

Who owns Pa 772 Marietta Av over AMTRAK?

It is owned by the State Highway Agency.