Fairfax County Bridge Report Card

Fairfax County scores 98 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A98 / 100

Local infrastructure snapshot

Fairfax County, Virginia

Fairfax County has 759 bridges in the National Bridge Inventory, with 6 rated poor and 0 rated scour-critical. Its poor-condition share of 0.8% is at or below the 3.4% statewide average. Poor-condition bridges carry about 86,921 daily vehicle crossings.

759Total Bridges

6Poor (0.8%)

350Fair (46.1%)

0Scour-Critical

Quote-Ready Local Facts

0.8%of county bridges are in poor condition, compared with 3.4% statewide and 6.7% nationally.

86,921daily vehicle crossings are on poor-condition bridges in the county.

0bridges are rated scour-critical, or 0.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Fairfax County a Bridge Condition Exposure Score of 98/100 (A). The county has 759 bridges in the National Bridge Inventory, including 6 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 86,921 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.

Download all county report-card scores as CSV.

How the Score Breaks Down

Factor	Weight	County Value	Penalty
Poor-condition bridge share	40	0.8%	1.6
Poor-condition traffic exposure	25	0.4% of measured traffic	0.3
Scour-critical bridge share	20	0.0%	0.0
Average age vs national baseline	10	36 years vs 48 nationally	0.0
Traffic-data completeness	5	23,808,277 measured daily crossings	0.0

Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.

County Comparisons

County Poor-Condition Share	0.8%
State Poor-Condition Share	3.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.0%
Average Bridge Age	36 years
Poor-Condition Traffic Exposure	86,921 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeChainbridge RD Nbl over Leesburg Pike; Route 7 — 27,000 vehicles/day Oldest Listed BridgeOld Dominion Drive over Pimmit Run — built in 1920 All County BridgesBrowse every bridge record in Fairfax County.

Top Bridges to Watch in Fairfax County

Bridge	Reason	Condition	Daily Traffic	Year Built
Chainbridge RD Nbl over Leesburg Pike; Route 7	Poor condition + traffic exposure	Poor	27,000	1965
WB Diaah over Hunter Mill Road	Poor condition + traffic exposure	Poor	22,000	1961
Edsall Road over Interstate 395	Poor condition + traffic exposure	Poor	21,942	1967
Sleepy Hollow Road over Holmes Run	Poor condition + traffic exposure	Poor	12,231	1960
Old Colchester Rd. over Pohick Creek	Poor condition + traffic exposure	Poor	2,323	1950
Beach Mill Road over Tributary Of Clarks Br.	Poor condition + traffic exposure	Poor	1,425	1983
Ramp Ok-e over I-95; Rmps Ok-s;f-s;h-s	High traffic	Good	281,966	2000
Shirley Mem. Hiway over Accotink Creek	High traffic	Fair	232,853	1993
Shirley Highway over Pohick Creek	High traffic	Fair	232,853	1994
I-495 over Ns Railway	High traffic	Fair	227,699	1961

Important safety note

Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.