US Bridges

Algoma RD 740 over N Fork Blackwater River

Good

Franklin County, Virginia · 0.20 Rt 641; 2.00 Rt 742 · Structure no. 000000000007952

Built
1984
41 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
114 ft
2 main spans
Daily traffic
339
2017 count
Owner
State
State Highway Agency

About this bridge

Algoma RD 740 over N Fork Blackwater River is a steel stringer/multi-beam or girder carrying Algoma RD 740 over N Fork Blackwater River in Franklin County, Virginia. It was built in 1984, so it is 41 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 339 vehicles a day, projected to reach 515 by 2042. The structure is 114 ft (34.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesAlgoma RD 740
CrossesN Fork Blackwater River
Location0.20 Rt 641; 2.00 Rt 742
RouteCounty Highway 740
Coordinates37.0306, -80.02641
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating63.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length114 ft (34.8 m)
Longest span54 ft (16.5 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic339 (2017)
Projected traffic515 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Algoma RD 740 over N Fork Blackwater River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Algoma RD 740 over N Fork Blackwater River 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 February 2024.

How much traffic does Algoma RD 740 over N Fork Blackwater River carry?

About 339 vehicles per day (2017 count).

How long is Algoma RD 740 over N Fork Blackwater River?

The structure is 114 ft (34.8 m) long with a longest span of 54 ft (16.5 m) and a deck 28 ft wide.

Who owns Algoma RD 740 over N Fork Blackwater River?

It is owned by the State Highway Agency.