Graham County Bridge Report Card

Graham County scores 74 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C74 / 100

Local infrastructure snapshot

Graham County, Arizona

Graham County has 181 bridges in the National Bridge Inventory, with 7 rated poor and 8 rated scour-critical. Its poor-condition share of 3.9% is above the 1.1% statewide average. Poor-condition bridges carry about 824 daily vehicle crossings.

181Total Bridges

7Poor (3.9%)

94Fair (51.9%)

8Scour-Critical

Quote-Ready Local Facts

3.9%of county bridges are in poor condition, compared with 1.1% statewide and 6.7% nationally.

824daily vehicle crossings are on poor-condition bridges in the county.

8bridges are rated scour-critical, or 4.4% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Graham County a Bridge Condition Exposure Score of 74/100 (C). The county has 181 bridges in the National Bridge Inventory, including 7 in poor condition and 8 rated scour-critical. Poor-condition bridges carry about 824 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	3.9%	7.7
Poor-condition traffic exposure	25	0.2% of measured traffic	0.2
Scour-critical bridge share	20	4.4%	8.8
Average age vs national baseline	10	71 years vs 48 nationally	9.3
Traffic-data completeness	5	362,006 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	3.9%
State Poor-Condition Share	1.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	4.4%
Average Bridge Age	71 years
Poor-Condition Traffic Exposure	824 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeLayton RD over Union Canal — 203 vehicles/day Oldest Listed BridgeSolomon Road over Stockton Drain — built in 1900 All County BridgesBrowse every bridge record in Graham County.

Top Bridges to Watch in Graham County

Bridge	Reason	Condition	Daily Traffic	Year Built
Layton RD over Union Canal	Poor condition + traffic exposure	Poor	203	1900
IRR BIA RTE 3 over Twin Draw	Poor condition + traffic exposure	Poor	120	1929
IRR BIA RTE 3 over Acorn Draw	Poor condition + traffic exposure	Poor	120	1929
IRR BIA RTE 3 over Calva Wash	Poor condition + traffic exposure	Poor	120	1929
IRR BIA RTE 3 over Oak Draw	Poor condition + traffic exposure	Poor	120	1929
IRR BIA RTE 3 over Hint Canyon	Poor condition + traffic exposure	Poor	120	1929
Curtis Road over San Jose Canal	Poor condition + traffic exposure	Poor	21	1987
US 70 over San Simon River	Scour-critical foundation rating	Fair	6,912	1923
IRR US 70 over Cottonwood Wash	Scour-critical foundation rating	Fair	5,460	1948
IRR US 70 over Patterson Wash	Scour-critical foundation rating	Fair	3,757	1932

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.