US Bridges

N Mount Joy ST over Conoy Creek

Fair

Lancaster County, Pennsylvania · 800 Ft NW of SR 4008 · Structure no. 000000000022147

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Arch - Deck
Steel
Length
20 ft
1 main span
Daily traffic
1,550
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Mount Joy ST over Conoy Creek is a steel arch - deck carrying N Mount Joy ST over Conoy Creek in Lancaster County, Pennsylvania. It was built in 1975, 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 1,550 vehicles a day, roughly 1% of them trucks, projected to reach 2,080 by 2031. The structure is 20 ft (6.1 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesN Mount Joy ST
CrossesConoy Creek
Location800 Ft NW of SR 4008
RouteCity Street 0
CountyLancaster County
StatePennsylvania
Coordinates40.15589, -76.60093
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
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width52 ft (16 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,550 (2011)
Projected traffic2,080 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was N Mount Joy ST over Conoy Creek built?

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

What condition is N Mount Joy ST over Conoy 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 N Mount Joy ST over Conoy Creek carry?

About 1,550 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is N Mount Joy ST over Conoy Creek?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 52 ft wide.

Who owns N Mount Joy ST over Conoy Creek?

It is owned by the City or Municipal Highway Agency.