US Bridges

T343 Frederick RD over Plum Creek

Fair

Blair County, Pennsylvania · 1 Mi.Nw.Of Martinsburg · Structure no. 000000000005956

Built
1963
62 years old, rebuilt 2013
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
199
2023 count
Owner
County
County Highway Agency

About this bridge

T343 Frederick RD over Plum Creek is a prestressed concrete box beam or girders - multiple carrying T343 Frederick RD over Plum Creek in Blair County, Pennsylvania. It was built in 1963 and reconstructed in 2013, so it is 62 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 199 vehicles a day, roughly 5% of them trucks, projected to reach 249 by 2043. The structure is 60 ft (18.3 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesT343 Frederick RD
CrossesPlum Creek
Location1 Mi.Nw.Of Martinsburg
RouteCity Street 0
CountyBlair County
StatePennsylvania
Coordinates40.31821, -78.34815
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating61.9 US tons
Inventory rating15 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span58 ft (17.7 m)
Deck width27 ft (8.3 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic199 (2023)
Projected traffic249 by 2043
Trucks5%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$878,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T343 Frederick RD over Plum Creek built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2013.

What condition is T343 Frederick RD over Plum 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 November 2023.

How much traffic does T343 Frederick RD over Plum Creek carry?

About 199 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is T343 Frederick RD over Plum Creek?

The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.7 m) and a deck 27 ft wide.

Who owns T343 Frederick RD over Plum Creek?

It is owned by the County Highway Agency.