US Bridges

Main Street over Saw Mill Run

Fair

Montgomery County, Pennsylvania · .6 MI SE US202 3367-F3 · Structure no. 000000000028227

Built
1900
125 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Masonry
Length
21 ft
1 main span
Daily traffic
15,408
2014 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Main Street over Saw Mill Run is a masonry arch - deck carrying Main Street over Saw Mill Run in Montgomery County, Pennsylvania. It was built in 1900, so it is 125 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 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 15,408 vehicles a day, roughly 1% of them trucks, projected to reach 18,500 by 2034. The structure is 21 ft (6.4 m) long and 78 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMain Street
CrossesSaw Mill Run
Location.6 MI SE US202 3367-F3
RouteCity Street 0
CountyMontgomery County
StatePennsylvania
Coordinates40.11247, -75.33888
Functional classUrban Other Principal Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating38 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width78 ft (23.7 m)
Roadway width48 ft (14.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,408 (2014)
Projected traffic18,500 by 2034
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$413,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Main Street over Saw Mill Run built?

It was built in 1900, making it 125 years old in 2025.

What condition is Main Street over Saw Mill 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 April 2024.

How much traffic does Main Street over Saw Mill Run carry?

About 15,408 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Main Street over Saw Mill Run?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 78 ft wide.

Who owns Main Street over Saw Mill Run?

It is owned by the Town or Township Highway Agency.