US Bridges

Rockhill Road over W Br Little Antietam Trb

Fair

Franklin County, Pennsylvania · 5NW Wboro/Tr.Wb L.Antie · Structure no. 000000000017708

Built
1920
105 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
200
2009 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Rockhill Road over W Br Little Antietam Trb is a steel stringer/multi-beam or girder carrying Rockhill Road over W Br Little Antietam Trb in Franklin County, Pennsylvania. It was built in 1920, so it is 105 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 200 vehicles a day, projected to reach 280 by 2029. The structure is 27 ft (8.2 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesRockhill Road
CrossesW Br Little Antietam Trb
Location5NW Wboro/Tr.Wb L.Antie
RouteCity Street 0
CountyFranklin County
StatePennsylvania
Coordinates39.82455, -77.61237
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span26 ft (7.9 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2009)
Projected traffic280 by 2029
Trucks0%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$59,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rockhill Road over W Br Little Antietam Trb built?

It was built in 1920, making it 105 years old in 2025.

What condition is Rockhill Road over W Br Little Antietam Trb 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 Rockhill Road over W Br Little Antietam Trb carry?

About 200 vehicles per day (2009 count).

How long is Rockhill Road over W Br Little Antietam Trb?

The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 21 ft wide.

Who owns Rockhill Road over W Br Little Antietam Trb?

It is owned by the Town or Township Highway Agency.