US Bridges

Pa 34; Balt. Ave. over Mountain Creek

Fair

Cumberland County, Pennsylvania · Mt Holly Springs · Structure no. 000000000013617

Built
1934
91 years old, rebuilt 1985
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
2 main spans
Daily traffic
10,564
2024 count
Owner
State
State Highway Agency

About this bridge

Pa 34; Balt. Ave. over Mountain Creek is a steel stringer/multi-beam or girder carrying Pa 34; Balt. Ave. over Mountain Creek in Cumberland County, Pennsylvania. It was built in 1934 and reconstructed in 1985, so it is 91 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 10,564 vehicles a day, roughly 9% of them trucks, projected to reach 14,490 by 2032. The structure is 100 ft (30.5 m) long and 35 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

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CarriesPa 34; Balt. Ave.
CrossesMountain Creek
LocationMt Holly Springs
RouteState Highway 34
CountyCumberland County
StatePennsylvania
Coordinates40.10906, -77.18294
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span45 ft (13.7 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,564 (2024)
Projected traffic14,490 by 2032
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.3 mi (31 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 34; Balt. Ave. over Mountain Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1985.

What condition is Pa 34; Balt. Ave. over Mountain Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Pa 34; Balt. Ave. over Mountain Creek carry?

About 10,564 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is Pa 34; Balt. Ave. over Mountain Creek?

The structure is 100 ft (30.5 m) long with a longest span of 45 ft (13.7 m) and a deck 35 ft wide.

Who owns Pa 34; Balt. Ave. over Mountain Creek?

It is owned by the State Highway Agency.