US Bridges

Pa 997; Main St. over W. Branch Antietam Creek

Good

Franklin County, Pennsylvania · N.E. of Mont Alto · Structure no. 000000000069868

Built
2023
2 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
3,458
2024 count
Owner
State
State Highway Agency

About this bridge

Pa 997; Main St. over W. Branch Antietam Creek is a concrete culvert carrying Pa 997; Main St. over W. Branch Antietam Creek in Franklin County, Pennsylvania. It was built in 2023, so it is 2 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 3,458 vehicles a day, roughly 6% of them trucks, projected to reach 4,544 by 2041. The structure is 20 ft (6.1 m) long and 38 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesPa 997; Main St.
CrossesW. Branch Antietam Creek
LocationN.E. of Mont Alto
RouteState Highway 997
CountyFranklin County
StatePennsylvania
Coordinates39.84506, -77.55683
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length20 ft (6.1 m)
Longest span16 ft (4.9 m)
Deck width38 ft (11.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,458 (2024)
Projected traffic4,544 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa 997; Main St. over W. Branch Antietam Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is Pa 997; Main St. over W. Branch Antietam 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 June 2024.

How much traffic does Pa 997; Main St. over W. Branch Antietam Creek carry?

About 3,458 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Pa 997; Main St. over W. Branch Antietam Creek?

The structure is 20 ft (6.1 m) long with a longest span of 16 ft (4.9 m) and a deck 38 ft wide.

Who owns Pa 997; Main St. over W. Branch Antietam Creek?

It is owned by the State Highway Agency.