US Bridges

T-423 Johns School over Glade Run

Good

Butler County, Pennsylvania · 0.25 MI SW of T-388 · Structure no. 000000000045582

Built
2009
16 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
100
2015 count
Owner
County
County Highway Agency

About this bridge

T-423 Johns School over Glade Run is a steel stringer/multi-beam or girder carrying T-423 Johns School over Glade Run in Butler County, Pennsylvania. It was built in 2009, so it is 16 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 9% of them trucks, projected to reach 125 by 2035. The structure is 63 ft (19.2 m) long and 23 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesT-423 Johns School
CrossesGlade Run
Location0.25 MI SW of T-388
RouteCity Street 0
CountyButler County
StatePennsylvania
Coordinates40.75802, -79.99186
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating110.1 US tons
Inventory rating97 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length63 ft (19.2 m)
Longest span60 ft (18.3 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2015)
Projected traffic125 by 2035
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T-423 Johns School over Glade Run built?

It was built in 2009, making it 16 years old in 2025.

What condition is T-423 Johns School over Glade Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does T-423 Johns School over Glade Run carry?

About 100 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is T-423 Johns School over Glade Run?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.3 m) and a deck 23 ft wide.

Who owns T-423 Johns School over Glade Run?

It is owned by the County Highway Agency.