US Bridges

Pa 641; SR 0641 over Mt. Rock Spring Creek

Good

Cumberland County, Pennsylvania · .3 Mi. E. of L.R. 21004 · Structure no. 000000000040420

Built
1998
27 years old
Condition
Good
inspected February 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
4,686
2024 count
Owner
State
State Highway Agency

About this bridge

Pa 641; SR 0641 over Mt. Rock Spring Creek is a prestressed concrete box beam or girders - multiple carrying Pa 641; SR 0641 over Mt. Rock Spring Creek in Cumberland County, Pennsylvania. It was built in 1998, so it is 27 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 4,686 vehicles a day, roughly 3% of them trucks, projected to reach 8,175 by 2032. The structure is 39 ft (11.9 m) long and 35 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesPa 641; SR 0641
CrossesMt. Rock Spring Creek
Location.3 Mi. E. of L.R. 21004
RouteState Highway 641
Coordinates40.20406, -77.30692
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length39 ft (11.9 m)
Longest span37 ft (11.3 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,686 (2024)
Projected traffic8,175 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa 641; SR 0641 over Mt. Rock Spring Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Pa 641; SR 0641 over Mt. Rock Spring 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 February 2024.

How much traffic does Pa 641; SR 0641 over Mt. Rock Spring Creek carry?

About 4,686 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Pa 641; SR 0641 over Mt. Rock Spring Creek?

The structure is 39 ft (11.9 m) long with a longest span of 37 ft (11.3 m) and a deck 35 ft wide.

Who owns Pa 641; SR 0641 over Mt. Rock Spring Creek?

It is owned by the State Highway Agency.