US Bridges

NBLCOULSONCH/RD620 over RTE I -77

Fair

Carroll County, Virginia · 0.38-RTE743; 0.82-RTE932 · Structure no. 000000000004634

Built
1977
48 years old
Condition
Fair
inspected October 2023
Type
Frame
Steel Continuous
Length
325 ft
5 main spans
Daily traffic
1,361
2022 count
Owner
State
State Highway Agency

About this bridge

NBLCOULSONCH/RD620 over RTE I -77 is a steel continuous frame carrying NBLCOULSONCH/RD620 over RTE I -77 in Carroll County, Virginia. It was built in 1977, so it is 48 years old, younger than the Virginia average of 50.7 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 1,361 vehicles a day, projected to reach 1,989 by 2045. The structure is 325 ft (99 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNBLCOULSONCH/RD620
CrossesRTE I -77
Location0.38-RTE743; 0.82-RTE932
RouteCounty Highway 620
CountyCarroll County
StateVirginia
Coordinates36.78274, -80.83071
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating84 US tons

Structure

Structure typeFrame
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length325 ft (99 m)
Longest span97 ft (29.7 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,361 (2022)
Projected traffic1,989 by 2045
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NBLCOULSONCH/RD620 over RTE I -77 built?

It was built in 1977, making it 48 years old in 2025.

What condition is NBLCOULSONCH/RD620 over RTE I -77 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 2023.

How much traffic does NBLCOULSONCH/RD620 over RTE I -77 carry?

About 1,361 vehicles per day (2022 count).

How long is NBLCOULSONCH/RD620 over RTE I -77?

The structure is 325 ft (99 m) long with a longest span of 97 ft (29.7 m) and a deck 42 ft wide.

Who owns NBLCOULSONCH/RD620 over RTE I -77?

It is owned by the State Highway Agency.