US Bridges

Township Road 490 over Roberts Run

Fair

Greene County, Pennsylvania · West of Brock · Structure no. 000000000018554

Built
1910
115 years old, rebuilt 1992
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
53 ft
1 main span
Daily traffic
100
1993 count
Owner
County
County Highway Agency

About this bridge

Township Road 490 over Roberts Run is a steel stringer/multi-beam or girder carrying Township Road 490 over Roberts Run in Greene County, Pennsylvania. It was built in 1910 and reconstructed in 1992, 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 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 100 vehicles a day, projected to reach 150 by 2011. The structure is 53 ft (16.2 m) long and 13 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesTownship Road 490
CrossesRoberts Run
LocationWest of Brock
RouteCity Street 7219
CountyGreene County
StatePennsylvania
Coordinates39.73652, -80.22229
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating59 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 25 or greater
Structure length53 ft (16.2 m)
Longest span50 ft (15.2 m)
Deck width13 ft (4 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1993)
Projected traffic150 by 2011
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$528,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Township Road 490 over Roberts Run built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1992.

What condition is Township Road 490 over Roberts 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 June 2024.

How much traffic does Township Road 490 over Roberts Run carry?

About 100 vehicles per day (1993 count).

How long is Township Road 490 over Roberts Run?

The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 13 ft wide.

Who owns Township Road 490 over Roberts Run?

It is owned by the County Highway Agency.