US Bridges

SR4010 over Glade Run

Fair

Armstrong County, Pennsylvania · Walkchalk NO.1 · Structure no. 000000000003320

Built
1918
107 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
37 ft
2 main spans
Daily traffic
1,607
2024 count
Owner
State
State Highway Agency

About this bridge

SR4010 over Glade Run is a concrete slab carrying SR4010 over Glade Run in Armstrong County, Pennsylvania. It was built in 1918, so it is 107 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 1,607 vehicles a day, roughly 3% of them trucks, projected to reach 1,934 by 2032. The structure is 37 ft (11.3 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR4010
CrossesGlade Run
LocationWalkchalk NO.1
RouteState Highway 0
CountyArmstrong County
StatePennsylvania
Coordinates40.83534, -79.57667
Functional classRural Major 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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length37 ft (11.3 m)
Longest span17 ft (5.2 m)
Deck width37 ft (11.3 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,607 (2024)
Projected traffic1,934 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$116,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR4010 over Glade Run built?

It was built in 1918, making it 107 years old in 2025.

What condition is SR4010 over Glade 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 December 2024.

How much traffic does SR4010 over Glade Run carry?

About 1,607 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is SR4010 over Glade Run?

The structure is 37 ft (11.3 m) long with a longest span of 17 ft (5.2 m) and a deck 37 ft wide.

Who owns SR4010 over Glade Run?

It is owned by the State Highway Agency.