US Bridges

Lower Mountain Rd. over Mill Creek

Fair

Bucks County, Pennsylvania · Forestville Bridge 30C01 · Structure no. 000000000007532

Built
1983
42 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
600
1997 count
Owner
County
County Highway Agency

About this bridge

Lower Mountain Rd. over Mill Creek is a prestressed concrete box beam or girders - multiple carrying Lower Mountain Rd. over Mill Creek in Bucks County, Pennsylvania. It was built in 1983, so it is 42 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 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 600 vehicles a day, projected to reach 752 by 2032. The structure is 69 ft (21 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLower Mountain Rd.
CrossesMill Creek
LocationForestville Bridge 30C01
RouteCity Street 0
CountyBucks County
StatePennsylvania
Coordinates40.30142, -75.04891
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating54 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length69 ft (21 m)
Longest span68 ft (20.7 m)
Deck width32 ft (9.9 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (1997)
Projected traffic752 by 2032
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Lower Mountain Rd. over Mill Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Lower Mountain Rd. over Mill 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 Lower Mountain Rd. over Mill Creek carry?

About 600 vehicles per day (1997 count).

How long is Lower Mountain Rd. over Mill Creek?

The structure is 69 ft (21 m) long with a longest span of 68 ft (20.7 m) and a deck 32 ft wide.

Who owns Lower Mountain Rd. over Mill Creek?

It is owned by the County Highway Agency.