US Bridges

RTE 951A over 77th Street

Fair

Niagara County, New York · 0.1 MI E JCT Rt 951A&190I · Structure no. 000000001064919

Built
1970
55 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
1 main span
Daily traffic
16,339
2019 count
Owner
State
State Highway Agency

About this bridge

RTE 951A over 77th Street is a steel stringer/multi-beam or girder carrying RTE 951A over 77th Street in Niagara County, New York. It was built in 1970, so it is 55 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 16,339 vehicles a day, roughly 3% of them trucks, projected to reach 18,933 by 2041. The structure is 100 ft (30.5 m) long and 118 ft wide.

CarriesRTE 951A
Crosses77th Street
Location0.1 MI E JCT Rt 951A&190I
RouteState Highway 951A
Coordinates43.07975, -78.97599
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110 US tons
Inventory rating66 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length100 ft (30.5 m)
Longest span95 ft (28.9 m)
Deck width118 ft (36 m)
Roadway width112 ft (34.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,339 (2019)
Projected traffic18,933 by 2041
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$11.2 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was RTE 951A over 77th Street built?

It was built in 1970, making it 55 years old in 2025.

What condition is RTE 951A over 77th Street 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 May 2024.

How much traffic does RTE 951A over 77th Street carry?

About 16,339 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is RTE 951A over 77th Street?

The structure is 100 ft (30.5 m) long with a longest span of 95 ft (28.9 m) and a deck 118 ft wide.

Who owns RTE 951A over 77th Street?

It is owned by the State Highway Agency.