US Bridges

Lankford MI RD-644 over Big Otter River

Good

Bedford County, Virginia · 0.01-RTE 673;0.50-RTE 675 · Structure no. 000000000029550

Built
2021
4 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
90 ft
1 main span
Daily traffic
125
2022 count
Owner
State
State Highway Agency

About this bridge

Lankford MI RD-644 over Big Otter River is a steel continuous stringer/multi-beam or girder carrying Lankford MI RD-644 over Big Otter River in Bedford County, Virginia. It was built in 2021, so it is 4 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 125 vehicles a day, roughly 3% of them trucks, projected to reach 139 by 2045. The structure is 90 ft (27.4 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLankford MI RD-644
CrossesBig Otter River
Location0.01-RTE 673;0.50-RTE 675
RouteCounty Highway 644
Coordinates37.38663, -79.46536
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating74 US tons
Inventory rating57 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length90 ft (27.4 m)
Longest span88 ft (26.8 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2022)
Projected traffic139 by 2045
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Lankford MI RD-644 over Big Otter River built?

It was built in 2021, making it 4 years old in 2025.

What condition is Lankford MI RD-644 over Big Otter 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 July 2023.

How much traffic does Lankford MI RD-644 over Big Otter River carry?

About 125 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Lankford MI RD-644 over Big Otter River?

The structure is 90 ft (27.4 m) long with a longest span of 88 ft (26.8 m) and a deck 24 ft wide.

Who owns Lankford MI RD-644 over Big Otter River?

It is owned by the State Highway Agency.