US Bridges

SR 46-PA 46 over Colegrove Brook

Poor

McKean County, Pennsylvania · Colegrove · Structure no. 000000000025250

Built
1927
98 years old
Condition
Poor
inspected October 2023
Type
Tee Beam
Concrete
Length
37 ft
1 main span
Daily traffic
395
2024 count
Owner
State
State Highway Agency

About this bridge

SR 46-PA 46 over Colegrove Brook is a concrete tee beam carrying SR 46-PA 46 over Colegrove Brook in McKean County, Pennsylvania. It was built in 1927, so it is 98 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 395 vehicles a day, roughly 15% of them trucks, projected to reach 1,258 by 2043. The structure is 37 ft (11.3 m) long and 32 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

Open in Google Maps
CarriesSR 46-PA 46
CrossesColegrove Brook
LocationColegrove
RouteState Highway 46
CountyMcKean County
StatePennsylvania
Coordinates41.72857, -78.38631
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, 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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length37 ft (11.3 m)
Longest span35 ft (10.7 m)
Deck width32 ft (9.8 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic395 (2024)
Projected traffic1,258 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed60.3 mi (97 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$489,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 46-PA 46 over Colegrove Brook built?

It was built in 1927, making it 98 years old in 2025.

What condition is SR 46-PA 46 over Colegrove Brook in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does SR 46-PA 46 over Colegrove Brook carry?

About 395 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is SR 46-PA 46 over Colegrove Brook?

The structure is 37 ft (11.3 m) long with a longest span of 35 ft (10.7 m) and a deck 32 ft wide.

Who owns SR 46-PA 46 over Colegrove Brook?

It is owned by the State Highway Agency.