Carroll County Bridge Report Card

Carroll 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

Carroll County, Maryland

Carroll County has 203 bridges in the National Bridge Inventory, with 10 rated poor and 4 rated scour-critical. Its poor-condition share of 4.9% is above the 4.6% statewide average. Poor-condition bridges carry about 28,097 daily vehicle crossings.

203Total Bridges

10Poor (4.9%)

136Fair (67.0%)

4Scour-Critical

Quote-Ready Local Facts

4.9%of county bridges are in poor condition, compared with 4.6% statewide and 6.7% nationally.

28,097daily vehicle crossings are on poor-condition bridges in the county.

4bridges are rated scour-critical, or 2.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Carroll County a Bridge Condition Exposure Score of 80/100 (B). The county has 203 bridges in the National Bridge Inventory, including 10 in poor condition and 4 rated scour-critical. Poor-condition bridges carry about 28,097 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	4.9%	9.9
Poor-condition traffic exposure	25	2.9% of measured traffic	2.2
Scour-critical bridge share	20	2.0%	3.9
Average age vs national baseline	10	57 years vs 48 nationally	3.7
Traffic-data completeness	5	953,211 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	4.9%
State Poor-Condition Share	4.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	2.0%
Average Bridge Age	57 years
Poor-Condition Traffic Exposure	28,097 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeMd 26 over Liberty Reservoir — 20,192 vehicles/day Oldest Listed BridgeMd 852 over Little Pipe Creek — built in 1900 All County BridgesBrowse every bridge record in Carroll County.

Top Bridges to Watch in Carroll County

Bridge	Reason	Condition	Daily Traffic	Year Built
Mummaford Road over Monocacy River	Poor condition + traffic exposure	Poor	268	1911
Mckinstry Mill RD over Little Pipe Creek	Poor condition + traffic exposure	Poor	234	1900
Mckinstrys Mill RD over Sams Creek	Poor condition + traffic exposure	Poor	119	1972
Md 26 over Liberty Reservoir	Poor condition + traffic exposure	Poor	20,192	1954
Stone Chapel Road over Little Pipe Creek	Poor condition + traffic exposure	Poor	4,612	1930
Upper Beckleysvill over Murphy Run	Poor condition + traffic exposure	Poor	1,745	1960
Brown Road over Roaring Run	Poor condition + traffic exposure	Poor	395	1985
Old Kays Mill Road over Beaver Run	Poor condition + traffic exposure	Poor	209	1974
Patapsco Road over East Br Patapsco River	Poor condition + traffic exposure	Poor	171	1900
Hughes Shop Road over Bear Branch	Poor condition + traffic exposure	Poor	152	1974

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.