Oakland County Bridge Report Card

Oakland County scores 75 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C75 / 100

Local infrastructure snapshot

Oakland County, Michigan

Oakland County has 513 bridges in the National Bridge Inventory, with 35 rated poor and 24 rated scour-critical. Its poor-condition share of 6.8% is at or below the 11.0% statewide average. Poor-condition bridges carry about 379,102 daily vehicle crossings.

513Total Bridges

35Poor (6.8%)

263Fair (51.3%)

24Scour-Critical

Quote-Ready Local Facts

6.8%of county bridges are in poor condition, compared with 11.0% statewide and 6.7% nationally.

379,102daily vehicle crossings are on poor-condition bridges in the county.

24bridges are rated scour-critical, or 4.7% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Oakland County a Bridge Condition Exposure Score of 75/100 (C). The county has 513 bridges in the National Bridge Inventory, including 35 in poor condition and 24 rated scour-critical. Poor-condition bridges carry about 379,102 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	6.8%	13.6
Poor-condition traffic exposure	25	3.0% of measured traffic	2.2
Scour-critical bridge share	20	4.7%	9.4
Average age vs national baseline	10	43 years vs 48 nationally	0.0
Traffic-data completeness	5	12,822,750 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	6.8%
State Poor-Condition Share	11.0%
National Poor-Condition Share	6.7%
County Scour-Critical Share	4.7%
Average Bridge Age	43 years
Poor-Condition Traffic Exposure	379,102 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeI-696 over I-75 & 4 Ramps — 209,200 vehicles/day Oldest Listed BridgePontiac RD over Sylvan Lake — built in 1900 All County BridgesBrowse every bridge record in Oakland County.

Top Bridges to Watch in Oakland County

Bridge	Reason	Condition	Daily Traffic	Year Built
9 Mile RD over Caddell Drain	Poor condition + traffic exposure	Poor	10,800	1973
Tuck RD over Upper Rouge River	Poor condition + traffic exposure	Poor	2,370	1925
Winkler Mill over Stony Creek	Poor condition + traffic exposure	Poor	346	1967
Brewer Road over Stoney Creek	Poor condition + traffic exposure	Poor	50	1984
I-696 over I-75 & 4 Ramps	Poor condition + traffic exposure	Poor	209,200	1971
I-75 Br over Clinton River	Poor condition + traffic exposure	Poor	40,292	1964
I-75 NB over Clarkston RD	Poor condition + traffic exposure	Poor	35,763	1962
Sashabaw RD over Clinton River	Poor condition + traffic exposure	Poor	15,800	1928
Martin Luther King over Grand Trunk Western Rr	Poor condition + traffic exposure	Poor	8,700	1976
9 Mile Road over Thornton Creek	Poor condition + traffic exposure	Poor	8,260	1970

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.