US Bridges

SR 1020 over Over Alder Run

Good

Tioga County, Pennsylvania · 1.25 MI N of Trowbridge · Structure no. 000000000032985

Built
1933
92 years old, rebuilt 1990
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
128
2023 count
Owner
State
State Highway Agency

About this bridge

SR 1020 over Over Alder Run is a steel stringer/multi-beam or girder carrying SR 1020 over Over Alder Run in Tioga County, Pennsylvania. It was built in 1933 and reconstructed in 1990, so it is 92 years old, older 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 128 vehicles a day, roughly 9% of them trucks, projected to reach 279 by 2032. The structure is 35 ft (10.7 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSR 1020
CrossesOver Alder Run
Location1.25 MI N of Trowbridge
RouteState Highway 0
CountyTioga County
StatePennsylvania
Coordinates41.97586, -76.98446
Functional classRural Minor Collector

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 inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than 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 loadHS 25 or greater
Structure length35 ft (10.7 m)
Longest span33 ft (10.1 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic128 (2023)
Projected traffic279 by 2032
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 1020 over Over Alder Run built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1990.

What condition is SR 1020 over Over Alder 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 June 2023.

How much traffic does SR 1020 over Over Alder Run carry?

About 128 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR 1020 over Over Alder Run?

The structure is 35 ft (10.7 m) long with a longest span of 33 ft (10.1 m) and a deck 28 ft wide.

Who owns SR 1020 over Over Alder Run?

It is owned by the State Highway Agency.