US Bridges

RTE 145 over Unknown Creek

Fair

Albany County, New York · 3.0 MI N JCT Rts 81 & 145 · Structure no. 000000001038220

Built
1931
94 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
21 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 slab carrying RTE 145 over Unknown Creek in Albany County, New York. It was built in 1931, so it is 94 years old, older 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 5 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 21 ft (6.4 m) long and 29 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesRTE 145
CrossesUnknown Creek
Location3.0 MI N JCT Rts 81 & 145
RouteState Highway 145
CountyAlbany County
StateNew York
Coordinates42.45493, -74.22511
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span20 ft (6 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (8 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 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$510,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 145 over Unknown Creek built?

It was built in 1931, making it 94 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 March 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 21 ft (6.4 m) long with a longest span of 20 ft (6 m) and a deck 29 ft wide.

Who owns RTE 145 over Unknown Creek?

It is owned by the State Highway Agency.