US Bridges

South Penn ST over Mahoning Creek

Fair

Jefferson County, Pennsylvania · 0.3 Miles South of SR 36 · Structure no. 000000000019874

Built
1974
51 years old, rebuilt 2019
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
172 ft
3 main spans
Daily traffic
725
2021 count
Owner
County
County Highway Agency

About this bridge

South Penn ST over Mahoning Creek is a prestressed concrete box beam or girders - multiple carrying South Penn ST over Mahoning Creek in Jefferson County, Pennsylvania. It was built in 1974 and reconstructed in 2019, so it is 51 years old, younger 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 5 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 725 vehicles a day, roughly 9% of them trucks, projected to reach 1,015 by 2043. The structure is 172 ft (52.4 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSouth Penn ST
CrossesMahoning Creek
Location0.3 Miles South of SR 36
RouteCity Street 0
CountyJefferson County
StatePennsylvania
Coordinates40.94138, -78.96726
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating81 US tons
Inventory rating11 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length172 ft (52.4 m)
Longest span63 ft (19.2 m)
Deck width37 ft (11.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic725 (2021)
Projected traffic1,015 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was South Penn ST over Mahoning Creek built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2019.

What condition is South Penn ST over Mahoning 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 July 2023.

How much traffic does South Penn ST over Mahoning Creek carry?

About 725 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is South Penn ST over Mahoning Creek?

The structure is 172 ft (52.4 m) long with a longest span of 63 ft (19.2 m) and a deck 37 ft wide.

Who owns South Penn ST over Mahoning Creek?

It is owned by the County Highway Agency.