US Bridges

S 4th Street over Shawnee Run

Fair

Lancaster County, Pennsylvania · 300 Ft South of Mill ST · Structure no. 000000000022143

Built
1850
175 years old
Condition
Fair
inspected March 2023
Type
Arch - Deck
Masonry
Length
21 ft
1 main span
Daily traffic
1,030
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

S 4th Street over Shawnee Run is a masonry arch - deck carrying S 4th Street over Shawnee Run in Lancaster County, Pennsylvania. It was built in 1850, so it is 175 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 6 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 1,030 vehicles a day, roughly 5% of them trucks, projected to reach 1,380 by 2031. The structure is 21 ft (6.4 m) long and 48 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS 4th Street
CrossesShawnee Run
Location300 Ft South of Mill ST
RouteCity Street 0
CountyLancaster County
StatePennsylvania
Coordinates40.02757, -76.49748
Functional classUrban 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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width48 ft (14.6 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,030 (2011)
Projected traffic1,380 by 2031
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$130,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S 4th Street over Shawnee Run built?

It was built in 1850, making it 175 years old in 2025.

What condition is S 4th Street over Shawnee Run 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 S 4th Street over Shawnee Run carry?

About 1,030 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is S 4th Street over Shawnee Run?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 48 ft wide.

Who owns S 4th Street over Shawnee Run?

It is owned by the City or Municipal Highway Agency.