Shelby County Bridge Report Card

Shelby County scores 97 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A97 / 100

Local infrastructure snapshot

Shelby County, Alabama

Shelby County has 343 bridges in the National Bridge Inventory, with 3 rated poor and 1 rated scour-critical. Its poor-condition share of 0.9% is at or below the 3.4% statewide average. Poor-condition bridges carry about 29,411 daily vehicle crossings.

343Total Bridges

3Poor (0.9%)

201Fair (58.6%)

1Scour-Critical

Quote-Ready Local Facts

0.9%of county bridges are in poor condition, compared with 3.4% statewide and 6.7% nationally.

29,411daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 0.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Shelby County a Bridge Condition Exposure Score of 97/100 (A). The county has 343 bridges in the National Bridge Inventory, including 3 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 29,411 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	0.9%	1.7
Poor-condition traffic exposure	25	1.2% of measured traffic	0.9
Scour-critical bridge share	20	0.3%	0.6
Average age vs national baseline	10	44 years vs 48 nationally	0.0
Traffic-data completeness	5	2,448,916 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	0.9%
State Poor-Condition Share	3.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.3%
Average Bridge Age	44 years
Poor-Condition Traffic Exposure	29,411 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeAl - 3 North over Peavine Ck * Acl Rr — 28,511 vehicles/day Oldest Listed BridgeCahaba Beach Road over Little Cahaba River — built in 1904 All County BridgesBrowse every bridge record in Shelby County.

Top Bridges to Watch in Shelby County

Bridge	Reason	Condition	Daily Traffic	Year Built
Al - 3 North over Peavine Ck * Acl Rr	Poor condition + traffic exposure	Poor	28,511	1924
Co. Hwy. 51 over Yellowleaf Creek	Poor condition + traffic exposure	Poor	800	1935
Cahaba Beach Road over Little Cahaba River	Poor condition + traffic exposure	Poor	100	1904
Crenshaw Swamp RD over Yellowleaf Creek	Scour-critical foundation rating	Fair	99	1963
I - 65 over Bishop Creek	High traffic	Fair	83,600	1980
I65 over Hogpen Creek	High traffic	Fair	77,840	1979
I - 65 over Buck Ck	High traffic	Fair	57,460	1959
I - 65 South over Cahaba River	High traffic	Fair	56,815	1978
I - 65 North over Cahaba River	High traffic	Fair	56,815	1978
I - 65 South over Co RD 17	High traffic	Fair	47,910	1980

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.