US Bridges

SR 1003 over Treaster Run

Fair

Mifflin County, Pennsylvania · 1 Mile North Locke Mills · Structure no. 000000000026481

Built
1935
90 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
421
2024 count
Owner
State
State Highway Agency

About this bridge

SR 1003 over Treaster Run is a steel stringer/multi-beam or girder carrying SR 1003 over Treaster Run in Mifflin County, Pennsylvania. It was built in 1935, so it is 90 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 421 vehicles a day, roughly 10% of them trucks, projected to reach 329 by 2044. The structure is 35 ft (10.7 m) long and 19 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSR 1003
CrossesTreaster Run
Location1 Mile North Locke Mills
RouteState Highway 0
CountyMifflin County
StatePennsylvania
Coordinates40.72058, -77.52831
Functional classRural Minor Collector

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.
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length35 ft (10.7 m)
Longest span33 ft (10.1 m)
Deck width19 ft (5.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic421 (2024)
Projected traffic329 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$420,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 1003 over Treaster Run built?

It was built in 1935, making it 90 years old in 2025.

What condition is SR 1003 over Treaster 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 SR 1003 over Treaster Run carry?

About 421 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SR 1003 over Treaster Run?

The structure is 35 ft (10.7 m) long with a longest span of 33 ft (10.1 m) and a deck 19 ft wide.

Who owns SR 1003 over Treaster Run?

It is owned by the State Highway Agency.