Elmore County Bridge Report Card

Elmore County scores 63 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D63 / 100

Local infrastructure snapshot

Elmore County, Idaho

Elmore County has 98 bridges in the National Bridge Inventory, with 8 rated poor and 13 rated scour-critical. Its poor-condition share of 8.2% is above the 5.4% statewide average. Poor-condition bridges carry about 530 daily vehicle crossings.

98Total Bridges

8Poor (8.2%)

65Fair (66.3%)

13Scour-Critical

Quote-Ready Local Facts

8.2%of county bridges are in poor condition, compared with 5.4% statewide and 6.7% nationally.

530daily vehicle crossings are on poor-condition bridges in the county.

13bridges are rated scour-critical, or 13.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Elmore County a Bridge Condition Exposure Score of 63/100 (D). The county has 98 bridges in the National Bridge Inventory, including 8 in poor condition and 13 rated scour-critical. Poor-condition bridges carry about 530 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	8.2%	16.3
Poor-condition traffic exposure	25	0.2% of measured traffic	0.2
Scour-critical bridge share	20	13.3%	20.0
Average age vs national baseline	10	48 years vs 48 nationally	0.2
Traffic-data completeness	5	227,350 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	8.2%
State Poor-Condition Share	5.4%
National Poor-Condition Share	6.7%
County Scour-Critical Share	13.3%
Average Bridge Age	48 years
Poor-Condition Traffic Exposure	530 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeMorrow Reservior R over Little Canyon Creek — 170 vehicles/day Oldest Listed BridgeDam Crest Road over Anderson Ranch Dam Spwy — built in 1950 All County BridgesBrowse every bridge record in Elmore County.

Top Bridges to Watch in Elmore County

Bridge	Reason	Condition	Daily Traffic	Year Built
Fall Ck.-rocky Bar over East Fork Fall Creek	Poor condition + traffic exposure	Poor	50	2013
Stc 3809;middle Fk over Black Warrior Creek	Poor condition + traffic exposure	Poor	30	1975
Fall Creek RD over Fall Creek	Poor condition + traffic exposure	Poor	30	1987
Roaring River Road over Middle Fork Boise River	Poor condition + traffic exposure	Poor	20	1957
Morrow Reservoir R over Little Canyon Creek	Poor condition + traffic exposure	Poor	170	1970
Morrow Reservior R over Little Canyon Creek	Poor condition + traffic exposure	Poor	170	1995
Stc 3809;middle Fk over Queens River No. 2	Poor condition + traffic exposure	Poor	30	1962
Stc 3809;middle Fk over M.fk.boise River(kirby)	Poor condition + traffic exposure	Poor	30	1991
I 84 Ebl over Rd;uprr;snake R;glenns F	Scour-critical foundation rating	Fair	9,750	1974
I 84 Wbl over Rd;uprr;snake R;glenns F	Scour-critical foundation rating	Fair	9,750	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.