US Bridges

RTE 145 over Unknown Creek

Fair

Albany County, New York · 2.5 MI NW Preston Hollow · Structure no. 000000001038230

Built
1997
28 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
25 ft
1 main span
Daily traffic
1,445
2019 count
Owner
State
State Highway Agency

About this bridge

RTE 145 over Unknown Creek is a concrete culvert carrying RTE 145 over Unknown Creek in Albany County, New York. It was built in 1997, so it is 28 years old, younger than the New York average of 53 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 1,445 vehicles a day, roughly 13% of them trucks, projected to reach 1,541 by 2041. The structure is 25 ft (7.5 m) long and 35 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesRTE 145
CrossesUnknown Creek
Location2.5 MI NW Preston Hollow
RouteState Highway 145
Coordinates42.46854, -74.24242
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating67 US tons
Inventory rating40 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length25 ft (7.5 m)
Longest span22 ft (6.7 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,445 (2019)
Projected traffic1,541 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$320,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 145 over Unknown Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is RTE 145 over Unknown Creek 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 April 2024.

How much traffic does RTE 145 over Unknown Creek carry?

About 1,445 vehicles per day (2019 count), of which roughly 13% are trucks.

How long is RTE 145 over Unknown Creek?

The structure is 25 ft (7.5 m) long with a longest span of 22 ft (6.7 m) and a deck 35 ft wide.

Who owns RTE 145 over Unknown Creek?

It is owned by the State Highway Agency.