County profile · official public datasets

Grayson County, VA

145 public highway bridges tracked in the FHWA National Bridge Inventory: 16.6% rated Good, 78.6% Fair, 4.8% Poor.

145
Public bridges
16.6%
Good condition
4.8%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Grayson County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

83rd
of 129 on Poor share
4.8%
Poor-condition share
145
public highway bridges
1964
avg year built

Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.

Grayson County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Grayson County ranks #83 of 129 Virginia counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.8%). Grayson County, Virginia contains 145 public highway bridges. Roughly 16.6% are rated “Good,” 78.6% “Fair,” and 4.8% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

Total bridges

145

Public highway bridges in Grayson County

Good condition

16.6%

24 of 145 rated 7-9

Fair condition

78.6%

114 of 145 rated 5-6

Poor condition

4.8%

7 of 145 rated 4 or below

In-state Poor-share rank

#83 of 129

Among Virginia counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 145 NBI-tracked bridges by lowest applicable component rating.

Good
16.6% (24)
Fair
78.6% (114)
Poor
4.8% (7)

Grayson County's Poor-condition bridges carry 3,266 vehicle crossings a day

That is 2.2% of the county's reported daily bridge traffic on 4.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 467 crossings a day against 408 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.

Computed over the 145 of 145 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

61.4% of Grayson County's bridges have passed the 50-year mark

89 of the 145 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 16.6% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.

Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.

One structure carries 47.1% of the county's Poor-condition bridge traffic

WILSON HWY over BIG WILSON CREEK, built 1934, carries 1,537 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 7-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 3,266 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Grayson County's bridges were built

145 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1930s, when 41 of the county's bridges still in the inventory were built, which is 28.3% of those with a recorded year. That cohort is now 85 to 94 years old in the 2024 inventory. Its average build year is 1964, 10 years older than the Virginia average of 1974.

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

How Grayson County compares with Virginia's closest counties by inventory size

The 5 Virginia counties nearest Grayson County in number of bridges, with their condition splits. Its 4.8% Poor share is the 3rd-lowest of these 6. Its average build year of 1964 against a peer-group mean of 1970 is 6 years older.

Showing the 5 closest of 128 Virginia counties eligible for comparison.

Bridge inventory size and condition shares for Grayson County and the 5 Virginia counties closest to it in inventory size
County Bridges Poor
Brunswick County 152 6.6%
Dinwiddie County 151 7.9%
Patrick County 145 2.8%
Southampton County 145 2.1%
Grayson County (this page) 145 4.8%
Scott County 138 8%

Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Grayson County's. Source: FHWA National Bridge Inventory, 2024 release.

Nationwide counties with similar inventory size or average build year

Two NBI-derived peer sets for Grayson County, both outside Virginia so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside VA (145 bridges here).

Similar average build year

Nearest mean year-built outside VA (1964 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 145 Good 24 Fair 114 Poor 7

Good-condition bridges (24)

FDR 690

Good

Over: JONES BRANCH

.06 MI. N-E ST HWY 602, Grayson, VA

Built 1990 Load: 20.7 t ADT: 50

SUMMERFIELD RD

Good

Over: ELK CREEK

.2 TO R660; 1.5 TO R830, Grayson, VA

Built 1932 Load: 23.6 t ADT: 73

FAIRWOOD CMTRY. RD

Good

Over: FOX CREEK

.01 MI. N. ST RTE 603, Grayson, VA

Built 1979 Load: 29.8 t ADT: 5

BLUE RIDGE PARKWAY

Good

Over: WEST FORK CHESTNUT CREEK

0.2 MILES TO VA ROUTE 89, Grayson, VA

Built 1939 Load: 29.9 t ADT: 1,347

COMERS ROCK ROAD

Good

Over: COMERS ROCK CREEK

.02 TO R611; .18 TO R672, Grayson, VA

Built 1958 Load: 32.7 t ADT: 242

Old Bridle CreekRd

Good

Over: LITTLE FOX CREEK

.2 TO R601 & 2.0 TO R711, Grayson, VA

Built 2016 Load: 32.7 t ADT: 50

WHITE TOP GAP RD.

Good

Over: HORSE CREEK

.3 TO R753; .6 TO R755, Grayson, VA

Built 2014 Load: 32.7 t ADT: 83

STONES CHAPEL RD

Good

Over: ELK CREEK

.06 FR 662 - 1.3 TO R664, Grayson, VA

Built 1961 Load: 35.4 t ADT: 24

FLATRIDGE ROAD

Good

Over: GUFFY CREEK

.89 TO R733 & .11 TO R734, Grayson, VA

Built 1958 Load: 38.1 t ADT: 102

KINDRECK RD

Good

Over: FOX CREEK

2.9 FR R728 & .3 TO R711, Grayson, VA

Built 1997 Load: 41.7 t ADT: 39

CHESNUT GROVE ROAD

Good

Over: BIG WILSON CREEK

1.06MFRRT.735;.02MTORT835, Grayson, VA

Built 2020 Load: 54.4 t ADT: 110

HILEY BRANCH LN

Good

Over: M FORK HELTON CREEK

AT R750 & .5 TO DEAD END, Grayson, VA

Built 1956 Load: 55.3 t ADT: 35

SR94(RIVERSIDE DR)

Good

Over: NEW RIVER @ GARRISON FD

2.90FR 274; 1.00 TO 58, Grayson, VA

Built 2011 Load: 59.0 t ADT: 2,153

Fox Creek Rd.

Good

Over: MIDDLE FOX CREEK

.1 TO R658 & 2.1 TO R727, Grayson, VA

Built 1974 Load: 62.6 t ADT: 98

WILSON HWY

Good

Over: PEGGY BRANCH

.11 FR 678 - .23 TO 808, Grayson, VA

Built 2017 Load: 62.6 t ADT: 1,676

VA ROUTE 89

Good

Over: BLUE RIDGE PARKWAY & CHE

1.92 MILES TO VA ROUTE 18, Grayson, VA

Built 1951 Load: 62.6 t ADT: 1,347

KNOB FORK LN

Good

Over: KNOB FORK CREEK

.05 TO R650 &.42 TODEADEN, Grayson, VA

Built 1997 Load: 69.9 t ADT: 20

NEW RIVER PKWY

Good

Over: NEW RIVER & RTE 700

.2 TO R701 & .5 TO NCLINE, Grayson, VA

Built 1989 Load: 72.6 t ADT: 1,752

OLD MILL RD

Good

Over: BIG WILSON CREEK

0.01 FR 716; 0.0 TO 58, Grayson, VA

Built 2005 Load: 73.5 t ADT: 147

Spring Valley Road

Good

Over: KNOB FORK CREEK

.1 TO R604;.7 TO R654, Grayson, VA

Built 1985 Load: 87.1 t ADT: 250

GRINDERS MILL RD.

Good

Over: MEADOW CREEK

0.1 FR 94 - 2.20 TO 637, Grayson, VA

Built 1932 Load: 88.9 t ADT: 134

Clito Rd.

Good

Over: KNOB FORK CREEK

0.15 TO R883&1.87 TO R660, Grayson, VA

Built 1988 Load: 88.9 t ADT: 24

COUNTRY VIEW RD

Good

Over: LAUREL CREEK

1.0 FR 677 - 0.0 TO 732, Grayson, VA

Built 1987 Load: 88.9 t ADT: 22

ROBERTS COVE RD.

Good

Over: MIDDLE FOX CREEK

0.1to 674W; 0.2 fr 674E, Grayson, VA

Built 1992 Load: 88.9 t ADT: 20

Read our methodology - how this data is sourced, computed, and verified.

Related

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.