US Bridges

(SR-104) over Over Penns Creek

Good

Union County, Pennsylvania · 3 MI S of Mifflinburg · Structure no. 000000000033444

Built
1943
82 years old, rebuilt 1996
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
271 ft
2 main spans
Daily traffic
4,856
2023 count
Owner
State
State Highway Agency

About this bridge

(SR-104) over Over Penns Creek is a steel continuous stringer/multi-beam or girder carrying (SR-104) over Over Penns Creek in Union County, Pennsylvania. It was built in 1943 and reconstructed in 1996, so it is 82 years old, older 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 4,856 vehicles a day, roughly 10% of them trucks, projected to reach 6,759 by 2032. The structure is 271 ft (82.6 m) long and 37 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
Carries(SR-104)
CrossesOver Penns Creek
Location3 MI S of Mifflinburg
RouteState Highway 104
CountyUnion County
StatePennsylvania
Coordinates40.86712, -77.04914
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length271 ft (82.6 m)
Longest span134 ft (40.8 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,856 (2023)
Projected traffic6,759 by 2032
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 (SR-104) over Over Penns Creek built?

It was built in 1943, making it 82 years old in 2025. It was reconstructed in 1996.

What condition is (SR-104) over Over Penns 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 May 2024.

How much traffic does (SR-104) over Over Penns Creek carry?

About 4,856 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is (SR-104) over Over Penns Creek?

The structure is 271 ft (82.6 m) long with a longest span of 134 ft (40.8 m) and a deck 37 ft wide.

Who owns (SR-104) over Over Penns Creek?

It is owned by the State Highway Agency.