US Bridges

SR 4008 over Trb to Br Chillisquaq CR

Fair

Montour County, Pennsylvania · 1.0 MI S Village of Comly · Structure no. 000000000028432

Built
1957
68 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
21 ft
1 main span
Daily traffic
299
2023 count
Owner
State
State Highway Agency

About this bridge

SR 4008 over Trb to Br Chillisquaq CR is a concrete slab carrying SR 4008 over Trb to Br Chillisquaq CR in Montour County, Pennsylvania. It was built in 1957, so it is 68 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 299 vehicles a day, roughly 5% of them trucks, projected to reach 426 by 2032. The structure is 21 ft (6.4 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 4008
CrossesTrb to Br Chillisquaq CR
Location1.0 MI S Village of Comly
RouteState Highway 0
CountyMontour County
StatePennsylvania
Coordinates41.11333, -76.72248
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span19 ft (5.8 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic299 (2023)
Projected traffic426 by 2032
Trucks5%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 4008 over Trb to Br Chillisquaq CR built?

It was built in 1957, making it 68 years old in 2025.

What condition is SR 4008 over Trb to Br Chillisquaq CR 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 October 2024.

How much traffic does SR 4008 over Trb to Br Chillisquaq CR carry?

About 299 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 4008 over Trb to Br Chillisquaq CR?

The structure is 21 ft (6.4 m) long with a longest span of 19 ft (5.8 m) and a deck 31 ft wide.

Who owns SR 4008 over Trb to Br Chillisquaq CR?

It is owned by the State Highway Agency.