Structure 2320 · Augusta County, VA

Knightly Mill RD over Middle River

Carries Knightly Mill RD over Middle River, 0.26 RT 777 - 2.05 RT 608.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT182 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 4/9 · sets the ratingSubstructure 6/9

182 ft end to end: about 3 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a through truss.

Built1915111 years old
Length182.1 ft55.5 m
Daily traffic309counted 2019
Last inspectedOctober 2023every 12 months

Location

StateVirginia
CountyAugusta
Location0.26 RT 777 - 2.05 RT 608
CarriesKnightly Mill RD
CrossesMiddle River
Coordinates38.23016, -78.92606

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length182.1 ft (55.5 m)
Max Span182.1 ft (55.5 m)
Deck Width15.4 ft (4.7 m)
Deck Area260.9 sq m
Main Spans1
Year Built1915

Traffic

Avg Daily Traffic309 (2019)
Lanes On Bridge1

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number000000000002320

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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