US Bridges

Izaak Walton Road over Route 29 Nbl & Sbl

Good

Amherst County, Virginia · 1.20-RT 604 / 0.90-RT 670 · Structure no. 000000000025958

Built
2004
21 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
275 ft
2 main spans
Daily traffic
706
2022 count
Owner
State
State Highway Agency

About this bridge

Izaak Walton Road over Route 29 Nbl & Sbl is a steel continuous stringer/multi-beam or girder carrying Izaak Walton Road over Route 29 Nbl & Sbl in Amherst County, Virginia. It was built in 2004, so it is 21 years old, younger than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 706 vehicles a day, roughly 1% of them trucks, projected to reach 787 by 2042. The structure is 275 ft (83.8 m) long and 40 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesIzaak Walton Road
CrossesRoute 29 Nbl & Sbl
Location1.20-RT 604 / 0.90-RT 670
RouteCounty Highway 663
Coordinates37.50398, -79.06652
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating105.1 US tons
Inventory rating81 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length275 ft (83.8 m)
Longest span146 ft (44.5 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic706 (2022)
Projected traffic787 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 Izaak Walton Road over Route 29 Nbl & Sbl built?

It was built in 2004, making it 21 years old in 2025.

What condition is Izaak Walton Road over Route 29 Nbl & Sbl in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does Izaak Walton Road over Route 29 Nbl & Sbl carry?

About 706 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Izaak Walton Road over Route 29 Nbl & Sbl?

The structure is 275 ft (83.8 m) long with a longest span of 146 ft (44.5 m) and a deck 40 ft wide.

Who owns Izaak Walton Road over Route 29 Nbl & Sbl?

It is owned by the State Highway Agency.