US Bridges

Theta Mill Road over Big Seneca Creek

Fair

Campbell County, Virginia · 2.30-RT 761/1.20-RT 701 · Structure no. 000000000004314

Built
1960
65 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
40 ft
1 main span
Daily traffic
153
2022 count
Owner
State
State Highway Agency

About this bridge

Theta Mill Road over Big Seneca Creek is a concrete slab carrying Theta Mill Road over Big Seneca Creek in Campbell County, Virginia. It was built in 1960, so it is 65 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 6 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 153 vehicles a day, projected to reach 171 by 2042. The structure is 40 ft (12.2 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesTheta Mill Road
CrossesBig Seneca Creek
Location2.30-RT 761/1.20-RT 701
RouteCounty Highway 698
CountyCampbell County
StateVirginia
Coordinates37.17363, -79.11623
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20 + Mod
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic153 (2022)
Projected traffic171 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 Theta Mill Road over Big Seneca Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Theta Mill Road over Big Seneca Creek 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 December 2023.

How much traffic does Theta Mill Road over Big Seneca Creek carry?

About 153 vehicles per day (2022 count).

How long is Theta Mill Road over Big Seneca Creek?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 20 ft wide.

Who owns Theta Mill Road over Big Seneca Creek?

It is owned by the State Highway Agency.