Pima County Bridge Report Card

Pima County scores 93 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A93 / 100

Local infrastructure snapshot

Pima County, Arizona

Pima County has 1,154 bridges in the National Bridge Inventory, with 11 rated poor and 29 rated scour-critical. Its poor-condition share of 1.0% is at or below the 1.1% statewide average. Poor-condition bridges carry about 107,635 daily vehicle crossings.

1,154Total Bridges

11Poor (1.0%)

361Fair (31.3%)

29Scour-Critical

Quote-Ready Local Facts

1.0%of county bridges are in poor condition, compared with 1.1% statewide and 6.7% nationally.

107,635daily vehicle crossings are on poor-condition bridges in the county.

29bridges are rated scour-critical, or 2.5% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Pima County a Bridge Condition Exposure Score of 93/100 (A). The county has 1,154 bridges in the National Bridge Inventory, including 11 in poor condition and 29 rated scour-critical. Poor-condition bridges carry about 107,635 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	1.0%	1.9
Poor-condition traffic exposure	25	0.5% of measured traffic	0.4
Scour-critical bridge share	20	2.5%	5.0
Average age vs national baseline	10	46 years vs 48 nationally	0.0
Traffic-data completeness	5	19,691,839 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	1.0%
State Poor-Condition Share	1.1%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.5%
Average Bridge Age	46 years
Poor-Condition Traffic Exposure	107,635 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeI 10; WB over Fas 317; Cortero RD — 56,965 vehicles/day Oldest Listed BridgeOld Nogales HWY over Small Wash — built in 1900 All County BridgesBrowse every bridge record in Pima County.

Top Bridges to Watch in Pima County

Bridge	Reason	Condition	Daily Traffic	Year Built
Trico Road over Brawley Wash	Poor condition + traffic exposure	Poor	3,531	1960
Trico-marana Road over Santa Cruz River	Poor condition + traffic exposure	Poor	2,718	1959
Madera Canyon RD over Medium Wash	Poor condition + traffic exposure	Poor	1,200	1935
Madera Canyon RD over Florida Canyon Wash	Poor condition + traffic exposure	Poor	1,200	1935
Trico RD over Santa Cruz River	Poor condition + traffic exposure	Poor	871	1962
Silverbell RD over Blanco Wash	Poor condition + traffic exposure	Poor	816	1935
Telera ST (ajo) over Ajo Wash	Poor condition + traffic exposure	Poor	200	1935
I 10; WB over Fas 317; Cortero RD	Poor condition + traffic exposure	Poor	56,965	1966
22nd Street over Sprr; Aviation HWY	Poor condition + traffic exposure	Poor	39,799	1966
IRR BIA RTE 161 over Wash	Poor condition + traffic exposure	Poor	250	1998

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.