US Bridges

Rocky Mountain RD over Carbaugh Run

Good

Franklin County, Pennsylvania · At Caledonia State Park · Structure no. 000000000053813

Built
2018
7 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
1,272
2024 count
Owner
State
State Highway Agency

About this bridge

Rocky Mountain RD over Carbaugh Run is a prestressed concrete box beam or girders - multiple carrying Rocky Mountain RD over Carbaugh Run in Franklin County, Pennsylvania. It was built in 2018, so it is 7 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 1,272 vehicles a day, roughly 7% of them trucks, projected to reach 2,140 by 2032. The structure is 65 ft (19.8 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRocky Mountain RD
CrossesCarbaugh Run
LocationAt Caledonia State Park
RouteState Highway 233
CountyFranklin County
StatePennsylvania
Coordinates39.90597, -77.47797
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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating43.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length65 ft (19.8 m)
Longest span61 ft (18.6 m)
Deck width35 ft (10.8 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,272 (2024)
Projected traffic2,140 by 2032
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byPrivate (other than railroad)
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 Rocky Mountain RD over Carbaugh Run built?

It was built in 2018, making it 7 years old in 2025.

What condition is Rocky Mountain RD over Carbaugh Run 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 September 2023.

How much traffic does Rocky Mountain RD over Carbaugh Run carry?

About 1,272 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Rocky Mountain RD over Carbaugh Run?

The structure is 65 ft (19.8 m) long with a longest span of 61 ft (18.6 m) and a deck 35 ft wide.

Who owns Rocky Mountain RD over Carbaugh Run?

It is owned by the State Highway Agency and maintained by the Private (other than railroad).