US Bridges

SR4020 over Mudlick Run

Fair

Indiana County, Pennsylvania · West Creek RD NO.1 · Structure no. 000000000019403

Built
1937
88 years old, rebuilt 1998
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
166
2024 count
Owner
State
State Highway Agency

About this bridge

SR4020 over Mudlick Run is a steel stringer/multi-beam or girder carrying SR4020 over Mudlick Run in Indiana County, Pennsylvania. It was built in 1937 and reconstructed in 1998, so it is 88 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 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 166 vehicles a day, roughly 7% of them trucks, projected to reach 222 by 2032. The structure is 34 ft (10.4 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR4020
CrossesMudlick Run
LocationWest Creek RD NO.1
RouteState Highway 0
CountyIndiana County
StatePennsylvania
Coordinates40.85431, -79.07309
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length34 ft (10.4 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic166 (2024)
Projected traffic222 by 2032
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$96,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR4020 over Mudlick Run built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1998.

What condition is SR4020 over Mudlick 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 February 2023.

How much traffic does SR4020 over Mudlick Run carry?

About 166 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is SR4020 over Mudlick Run?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns SR4020 over Mudlick Run?

It is owned by the State Highway Agency.