US Bridges

Bastian RD T-546 over Armstrong Creek

Fair

Dauphin County, Pennsylvania · 3.5S E-Ville/Armstrong CR · Structure no. 000000000014668

Built
1975
50 years old, rebuilt 2021
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
23 ft
1 main span
Daily traffic
75
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Bastian RD T-546 over Armstrong Creek is a prestressed concrete box beam or girders - multiple carrying Bastian RD T-546 over Armstrong Creek in Dauphin County, Pennsylvania. It was built in 1975 and reconstructed in 2021, so it is 50 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 75 vehicles a day, roughly 10% of them trucks, projected to reach 105 by 2041. The structure is 23 ft (7 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesBastian RD T-546
CrossesArmstrong Creek
Location3.5S E-Ville/Armstrong CR
RouteCity Street 0
Coordinates40.5159, -76.8192
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.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating63.1 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length23 ft (7 m)
Longest span22 ft (6.7 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2021)
Projected traffic105 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bastian RD T-546 over Armstrong Creek built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2021.

What condition is Bastian RD T-546 over Armstrong 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 May 2023.

How much traffic does Bastian RD T-546 over Armstrong Creek carry?

About 75 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Bastian RD T-546 over Armstrong Creek?

The structure is 23 ft (7 m) long with a longest span of 22 ft (6.7 m) and a deck 28 ft wide.

Who owns Bastian RD T-546 over Armstrong Creek?

It is owned by the Town or Township Highway Agency.