US Bridges

T-330 Heisey Road over W Br Conococheague

Good

Franklin County, Pennsylvania · 3.5SE Mercersburg/Conococ · Structure no. 000000000068312

Built
2021
4 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
129 ft
2 main spans
Daily traffic
257
2020 count
Owner
County
County Highway Agency

About this bridge

T-330 Heisey Road over W Br Conococheague is a prestressed concrete continuous box beam or girders - multiple carrying T-330 Heisey Road over W Br Conococheague in Franklin County, Pennsylvania. It was built in 2021, so it is 4 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 257 vehicles a day, roughly 5% of them trucks, projected to reach 303 by 2038. The structure is 129 ft (39.3 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesT-330 Heisey Road
CrossesW Br Conococheague
Location3.5SE Mercersburg/Conococ
RouteCity Street 0
CountyFranklin County
StatePennsylvania
Coordinates39.79608, -77.85914
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length129 ft (39.3 m)
Longest span63 ft (19.2 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic257 (2020)
Projected traffic303 by 2038
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 T-330 Heisey Road over W Br Conococheague built?

It was built in 2021, making it 4 years old in 2025.

What condition is T-330 Heisey Road over W Br Conococheague 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 2023.

How much traffic does T-330 Heisey Road over W Br Conococheague carry?

About 257 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is T-330 Heisey Road over W Br Conococheague?

The structure is 129 ft (39.3 m) long with a longest span of 63 ft (19.2 m) and a deck 28 ft wide.

Who owns T-330 Heisey Road over W Br Conococheague?

It is owned by the County Highway Agency.