US Bridges

T-380 over Buffalo Creek

FairPosted for load

Union County, Pennsylvania · 1.2 MI Nne of Mifflinburg · Structure no. 000000000033601

Built
1970
55 years old, rebuilt 2016
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
85 ft
1 main span
Daily traffic
162
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-380 over Buffalo Creek is a steel stringer/multi-beam or girder carrying T-380 over Buffalo Creek in Union County, Pennsylvania. It was built in 1970 and reconstructed in 2016, so it is 55 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 162 vehicles a day, roughly 2% of them trucks, projected to reach 250 by 2046. The structure is 85 ft (25.9 m) long and 21 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesT-380
CrossesBuffalo Creek
Location1.2 MI Nne of Mifflinburg
RouteCity Street 0
CountyUnion County
StatePennsylvania
Coordinates40.93255, -77.03516
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating39 US tons
Inventory rating23 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span79 ft (24.1 m)
Deck width21 ft (6.3 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic162 (2024)
Projected traffic250 by 2046
Trucks2%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$111,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-380 over Buffalo Creek built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2016.

What condition is T-380 over Buffalo 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 2023.

How much traffic does T-380 over Buffalo Creek carry?

About 162 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is T-380 over Buffalo Creek?

The structure is 85 ft (25.9 m) long with a longest span of 79 ft (24.1 m) and a deck 21 ft wide.

Who owns T-380 over Buffalo Creek?

It is owned by the Town or Township Highway Agency.