US Bridges

I-81 Sbl over Water Plant RD (rt 840)

Good

Warren County, Virginia · 0.83 Shen -0.45 Frederick · Structure no. 000000000031392

Built
2023
2 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
130 ft
1 main span
Daily traffic
25,185
2020 count
Owner
State
State Highway Agency

About this bridge

I-81 Sbl over Water Plant RD (rt 840) is a prestressed concrete stringer/multi-beam or girder carrying I-81 Sbl over Water Plant RD (rt 840) in Warren County, Virginia. It was built in 2023, so it is 2 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25,185 vehicles a day, roughly 21% of them trucks, projected to reach 35,259 by 2040. The structure is 130 ft (39.6 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-81 Sbl
CrossesWater Plant RD (rt 840)
Location0.83 Shen -0.45 Frederick
RouteInterstate 81
Coordinates39.00577, -78.30841
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 15 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94 US tons
Inventory rating70 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length130 ft (39.6 m)
Longest span130 ft (39.6 m)
Deck width72 ft (21.9 m)
Roadway width69 ft (21 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,185 (2020)
Projected traffic35,259 by 2040
Trucks21%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$79 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-81 Sbl over Water Plant RD (rt 840) built?

It was built in 2023, making it 2 years old in 2025.

What condition is I-81 Sbl over Water Plant RD (rt 840) 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 2024.

How much traffic does I-81 Sbl over Water Plant RD (rt 840) carry?

About 25,185 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is I-81 Sbl over Water Plant RD (rt 840)?

The structure is 130 ft (39.6 m) long with a longest span of 130 ft (39.6 m) and a deck 72 ft wide.

Who owns I-81 Sbl over Water Plant RD (rt 840)?

It is owned by the State Highway Agency.