Merced County Bridge Report Card

Merced County scores 80 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B80 / 100

Local infrastructure snapshot

Merced County, California

Merced County has 532 bridges in the National Bridge Inventory, with 23 rated poor and 12 rated scour-critical. Its poor-condition share of 4.3% is at or below the 4.9% statewide average. Poor-condition bridges carry about 108,660 daily vehicle crossings.

532Total Bridges

23Poor (4.3%)

314Fair (59.0%)

12Scour-Critical

Quote-Ready Local Facts

4.3%of county bridges are in poor condition, compared with 4.9% statewide and 6.7% nationally.

108,660daily vehicle crossings are on poor-condition bridges in the county.

12bridges are rated scour-critical, or 2.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Merced County a Bridge Condition Exposure Score of 80/100 (B). The county has 532 bridges in the National Bridge Inventory, including 23 in poor condition and 12 rated scour-critical. Poor-condition bridges carry about 108,660 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	4.3%	8.6
Poor-condition traffic exposure	25	3.3% of measured traffic	2.5
Scour-critical bridge share	20	2.3%	4.5
Average age vs national baseline	10	58 years vs 48 nationally	4.0
Traffic-data completeness	5	3,252,735 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	4.3%
State Poor-Condition Share	4.9%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.3%
Average Bridge Age	58 years
Poor-Condition Traffic Exposure	108,660 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeState Route 99 SB over Black Rascal Canal — 25,500 vehicles/day Oldest Listed BridgeWhite Rock Road over Deadman Creek — built in 1910 All County BridgesBrowse every bridge record in Merced County.

Top Bridges to Watch in Merced County

Bridge	Reason	Condition	Daily Traffic	Year Built
Washington Road over Eastside Bypass	Poor condition + traffic exposure	Poor	120	1968
Quinley Avenue over Black Rascal Creek	Poor condition + traffic exposure	Poor	100	1962
State Route 99 NB over Black Rascal Canal	Poor condition + traffic exposure	Poor	25,500	1962
State Route 99 SB over Bear Creek	Poor condition + traffic exposure	Poor	25,500	1962
State Route 99 SB over Black Rascal Canal	Poor condition + traffic exposure	Poor	25,500	1964
Buhach Road over Livingston Canal	Poor condition + traffic exposure	Poor	9,555	1965
Applegate Road over State Route 99 & Ramps	Poor condition + traffic exposure	Poor	9,220	1957
State Route 152 WB over Fresno River	Poor condition + traffic exposure	Poor	8,425	1969
Pioneer RD over Outside Canal	Poor condition + traffic exposure	Poor	1,360	1960
Gurr Road over Duck Slough	Poor condition + traffic exposure	Poor	500	1975

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.