US Bridges

SR 45 over Over Trib. Buffalo Cr.

Fair

Union County, Pennsylvania · 1 MI E of Mifflinburg · Structure no. 000000000033410

Built
1938
87 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Concrete
Length
30 ft
1 main span
Daily traffic
9,622
2024 count
Owner
State
State Highway Agency

About this bridge

SR 45 over Over Trib. Buffalo Cr. is a concrete tee beam carrying SR 45 over Over Trib. Buffalo Cr. in Union County, Pennsylvania. It was built in 1938, so it is 87 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.

It carries about 9,622 vehicles a day, roughly 8% of them trucks, projected to reach 16,838 by 2032. The structure is 30 ft (9.1 m) long and 43 ft wide. If it were closed, the detour would be 42.3 mi (68 km).

Location

Open in Google Maps
CarriesSR 45
CrossesOver Trib. Buffalo Cr.
Location1 MI E of Mifflinburg
RouteState Highway 45
CountyUnion County
StatePennsylvania
Coordinates40.9273, -77.01969
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating56 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,622 (2024)
Projected traffic16,838 by 2032
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.3 mi (68 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$107,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 45 over Over Trib. Buffalo Cr. built?

It was built in 1938, making it 87 years old in 2025.

What condition is SR 45 over Over Trib. Buffalo Cr. 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 February 2023.

How much traffic does SR 45 over Over Trib. Buffalo Cr. carry?

About 9,622 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is SR 45 over Over Trib. Buffalo Cr.?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 43 ft wide.

Who owns SR 45 over Over Trib. Buffalo Cr.?

It is owned by the State Highway Agency.