US Bridges

Stone Post Road over Monocacy Creek

Fair

Northampton County, Pennsylvania · West of Pa 987 · Structure no. 000000000028922

Built
1981
44 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
200
2010 count
Owner
County
County Highway Agency

About this bridge

Stone Post Road over Monocacy Creek is a concrete slab carrying Stone Post Road over Monocacy Creek in Northampton 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 200 vehicles a day, roughly 1% of them trucks, projected to reach 250 by 2030. The structure is 27 ft (8.2 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesStone Post Road
CrossesMonocacy Creek
LocationWest of Pa 987
RouteCity Street 0
CountyNorthampton County
StatePennsylvania
Coordinates40.73535, -75.39981
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.
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 inspectionApril 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2010)
Projected traffic250 by 2030
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stone Post Road over Monocacy Creek built?

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

What condition is Stone Post Road over Monocacy 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 Stone Post Road over Monocacy Creek carry?

About 200 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Stone Post Road over Monocacy Creek?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 35 ft wide.

Who owns Stone Post Road over Monocacy Creek?

It is owned by the County Highway Agency.