US Bridges

Knob Church RD/798 over Mill Creek

FairPosted for load

Franklin County, Virginia · 0.45 Rt 603; 0.50 Rt 773 · Structure no. 000000000007991

Built
1932
93 years old, rebuilt 1991
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
372
2017 count
Owner
State
State Highway Agency

About this bridge

Knob Church RD/798 over Mill Creek is a steel stringer/multi-beam or girder carrying Knob Church RD/798 over Mill Creek in Franklin County, Virginia. It was built in 1932 and reconstructed in 1991, so it is 93 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 372 vehicles a day, projected to reach 424 by 2042. The structure is 41 ft (12.5 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesKnob Church RD/798
CrossesMill Creek
Location0.45 Rt 603; 0.50 Rt 773
RouteCounty Highway 798
CountyFranklin County
StateVirginia
Coordinates36.82295, -80.02952
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length41 ft (12.5 m)
Longest span41 ft (12.5 m)
Deck width21 ft (6.4 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic372 (2017)
Projected traffic424 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$151.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Knob Church RD/798 over Mill Creek built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1991.

What condition is Knob Church RD/798 over Mill 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 July 2024.

How much traffic does Knob Church RD/798 over Mill Creek carry?

About 372 vehicles per day (2017 count).

How long is Knob Church RD/798 over Mill Creek?

The structure is 41 ft (12.5 m) long with a longest span of 41 ft (12.5 m) and a deck 21 ft wide.

Who owns Knob Church RD/798 over Mill Creek?

It is owned by the State Highway Agency.