US Bridges

T-792 Lower Mudlic over Pine Run

FairPosted for load

Armstrong County, Pennsylvania · 500 Feet North of SR-1010 · Structure no. 000000000003401

Built
1910
115 years old, rebuilt 2014
Condition
Fair
inspected May 2023
Type
Truss - Thru
Steel
Length
86 ft
1 main span
Daily traffic
50
2021 count
Owner
County
County Highway Agency

About this bridge

T-792 Lower Mudlic over Pine Run is a steel truss - thru carrying T-792 Lower Mudlic over Pine Run in Armstrong County, Pennsylvania. It was built in 1910 and reconstructed in 2014, so it is 115 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, roughly 9% of them trucks, projected to reach 100 by 2041. The structure is 86 ft (26.2 m) long and 13 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesT-792 Lower Mudlic
CrossesPine Run
Location500 Feet North of SR-1010
RouteCity Street 0
CountyArmstrong County
StatePennsylvania
Coordinates40.9469, -79.27637
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating35.1 US tons
Inventory rating22 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length86 ft (26.2 m)
Longest span82 ft (25 m)
Deck width13 ft (4.1 m)
Roadway width13 ft (3.9 m)
Vertical clearance over deck14 ft (4.2 m)

Traffic and service

Average daily traffic50 (2021)
Projected traffic100 by 2041
Trucks9%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$582,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-792 Lower Mudlic over Pine Run built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 2014.

What condition is T-792 Lower Mudlic over Pine 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 May 2023.

How much traffic does T-792 Lower Mudlic over Pine Run carry?

About 50 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is T-792 Lower Mudlic over Pine Run?

The structure is 86 ft (26.2 m) long with a longest span of 82 ft (25 m) and a deck 13 ft wide.

Who owns T-792 Lower Mudlic over Pine Run?

It is owned by the County Highway Agency.