US Bridges

SR 4018 over Conodoguinet Creek

FairPosted for load

Franklin County, Pennsylvania · 2 Mi. S.E. of Mowersville · Structure no. 000000000017610

Built
1827
198 years old, rebuilt 2022
Condition
Fair
inspected April 2024
Type
Arch - Deck
Masonry
Length
104 ft
3 main spans
Daily traffic
956
2024 count
Owner
State
State Highway Agency

About this bridge

SR 4018 over Conodoguinet Creek is a masonry arch - deck carrying SR 4018 over Conodoguinet Creek in Franklin County, Pennsylvania. It was built in 1827 and reconstructed in 2022, so it is 198 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. Its operating status is: posted for load restriction.

It carries about 956 vehicles a day, roughly 4% of them trucks, projected to reach 1,002 by 2032. The structure is 104 ft (31.7 m) long and 21 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesSR 4018
CrossesConodoguinet Creek
Location2 Mi. S.E. of Mowersville
RouteState Highway 0
CountyFranklin County
StatePennsylvania
Coordinates40.09705, -77.57044
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating12 US tons
Inventory rating7.1 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans3
Design loadUnknown
Structure length104 ft (31.7 m)
Longest span33 ft (10.1 m)
Deck width21 ft (6.3 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic956 (2024)
Projected traffic1,002 by 2032
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$903,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 4018 over Conodoguinet Creek built?

It was built in 1827, making it 198 years old in 2025. It was reconstructed in 2022.

What condition is SR 4018 over Conodoguinet 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 April 2024.

How much traffic does SR 4018 over Conodoguinet Creek carry?

About 956 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is SR 4018 over Conodoguinet Creek?

The structure is 104 ft (31.7 m) long with a longest span of 33 ft (10.1 m) and a deck 21 ft wide.

Who owns SR 4018 over Conodoguinet Creek?

It is owned by the State Highway Agency.