US Bridges

Mill Street over Shawnee Run

Fair

Lancaster County, Pennsylvania · 800 Ft East of Fourth ST · Structure no. 000000000022141

Built
1981
44 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
825
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mill Street over Shawnee Run is a concrete slab carrying Mill Street over Shawnee Run in Lancaster County, Pennsylvania. It was built in 1981, so it is 44 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 825 vehicles a day, roughly 6% of them trucks, projected to reach 1,105 by 2031. The structure is 32 ft (9.8 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMill Street
CrossesShawnee Run
Location800 Ft East of Fourth ST
RouteCity Street 0
Coordinates40.02825, -76.49494
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
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width34 ft (10.3 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic825 (2011)
Projected traffic1,105 by 2031
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mill Street over Shawnee Run built?

It was built in 1981, making it 44 years old in 2025.

What condition is Mill 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 August 2023.

How much traffic does Mill Street over Shawnee Run carry?

About 825 vehicles per day (2011 count), of which roughly 6% are trucks.

How long is Mill Street over Shawnee Run?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 34 ft wide.

Who owns Mill Street over Shawnee Run?

It is owned by the City or Municipal Highway Agency.