Salt Lake County Bridge Report Card

Salt Lake County scores 88 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B88 / 100

Local infrastructure snapshot

Salt Lake County, Utah

Salt Lake County has 666 bridges in the National Bridge Inventory, with 29 rated poor and 7 rated scour-critical. Its poor-condition share of 4.4% is above the 3.5% statewide average. Poor-condition bridges carry about 701,073 daily vehicle crossings.

666Total Bridges

29Poor (4.4%)

490Fair (73.6%)

7Scour-Critical

Quote-Ready Local Facts

4.4%of county bridges are in poor condition, compared with 3.5% statewide and 6.7% nationally.

701,073daily vehicle crossings are on poor-condition bridges in the county.

7bridges are rated scour-critical, or 1.1% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Salt Lake County a Bridge Condition Exposure Score of 88/100 (B). The county has 666 bridges in the National Bridge Inventory, including 29 in poor condition and 7 rated scour-critical. Poor-condition bridges carry about 701,073 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	4.4%	8.7
Poor-condition traffic exposure	25	1.9% of measured traffic	1.4
Scour-critical bridge share	20	1.1%	2.1
Average age vs national baseline	10	32 years vs 48 nationally	0.0
Traffic-data completeness	5	37,704,120 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	4.4%
State Poor-Condition Share	3.5%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.1%
Average Bridge Age	32 years
Poor-Condition Traffic Exposure	701,073 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeI-80 (sr-80) over Sr-89 (us-89) State St. — 127,090 vehicles/day Oldest Listed Bridge7800 South Street over North Jordan Canal — built in 1934 All County BridgesBrowse every bridge record in Salt Lake County.

Top Bridges to Watch in Salt Lake County

Bridge	Reason	Condition	Daily Traffic	Year Built
Highland Drive over Big Cottonwood Creek	Poor condition + traffic exposure	Poor	20,009	1936
I-80 (sr-80) over Sr-89 (us-89) State St.	Poor condition + traffic exposure	Poor	127,090	1966
I-215 (sr-215) Wbl over Sr-68 Redwood Road	Poor condition + traffic exposure	Poor	102,805	1976
Sr-201 (2100 S.st) over 3200 West St. Int. X-rd.	Poor condition + traffic exposure	Poor	99,668	1980
I-215 (sr-215) Nbl over Sr-173 5400 So. Street	Poor condition + traffic exposure	Poor	91,400	1976
10600 So over East Jordan Canal	Poor condition + traffic exposure	Poor	37,101	1979
10600 S.st.fa#2078 over Jordan And Salt Lake C	Poor condition + traffic exposure	Poor	27,800	1979
Sr-71 (900e. St.) over Little Cottonwood Creek	Poor condition + traffic exposure	Poor	25,770	1973
Sr-154nb (bngtr.h) over 700 South Street	Poor condition + traffic exposure	Poor	21,510	1985
Sr-154sb (bngtr.h) over 700 South Street	Poor condition + traffic exposure	Poor	21,510	1985

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.