US Bridges

North Fork RD/603 over RTE I 81

Fair

Montgomery County, Virginia · 0.10-RT 635; 1.60-RT 629 · Structure no. 000000000012197

Built
1970
55 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
286 ft
2 main spans
Daily traffic
2,096
2022 count
Owner
State
State Highway Agency

About this bridge

North Fork RD/603 over RTE I 81 is a steel continuous stringer/multi-beam or girder carrying North Fork RD/603 over RTE I 81 in Montgomery County, Virginia. It was built in 1970, so it is 55 years old, older 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 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 2,096 vehicles a day, roughly 1% of them trucks, projected to reach 2,453 by 2042. The structure is 286 ft (87.3 m) long and 33 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

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CarriesNorth Fork RD/603
CrossesRTE I 81
Location0.10-RT 635; 1.60-RT 629
RouteCounty Highway 603
CountyMontgomery County
StateVirginia
Coordinates37.23303, -80.23837
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length286 ft (87.3 m)
Longest span84 ft (25.5 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,096 (2022)
Projected traffic2,453 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed19.9 mi (32 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$411.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was North Fork RD/603 over RTE I 81 built?

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

What condition is North Fork RD/603 over RTE I 81 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 February 2024.

How much traffic does North Fork RD/603 over RTE I 81 carry?

About 2,096 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is North Fork RD/603 over RTE I 81?

The structure is 286 ft (87.3 m) long with a longest span of 84 ft (25.5 m) and a deck 33 ft wide.

Who owns North Fork RD/603 over RTE I 81?

It is owned by the State Highway Agency.