Grand Traverse County Bridge Report Card

Grand Traverse County scores 73 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C73 / 100

Local infrastructure snapshot

Grand Traverse County, Michigan

Grand Traverse County has 33 bridges in the National Bridge Inventory, with 2 rated poor and 1 rated scour-critical. Its poor-condition share of 6.1% is at or below the 11.0% statewide average. Poor-condition bridges carry about 24,431 daily vehicle crossings.

33Total Bridges

2Poor (6.1%)

14Fair (42.4%)

1Scour-Critical

Quote-Ready Local Facts

6.1%of county bridges are in poor condition, compared with 11.0% statewide and 6.7% nationally.

24,431daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 3.0% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Grand Traverse County a Bridge Condition Exposure Score of 73/100 (C). The county has 33 bridges in the National Bridge Inventory, including 2 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 24,431 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	6.1%	12.1
Poor-condition traffic exposure	25	8.7% of measured traffic	6.5
Scour-critical bridge share	20	3.0%	6.1
Average age vs national baseline	10	55 years vs 48 nationally	2.7
Traffic-data completeness	5	281,835 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	6.1%
State Poor-Condition Share	11.0%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.0%
Average Bridge Age	55 years
Poor-Condition Traffic Exposure	24,431 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeBeitner Road over Boardman River — 19,628 vehicles/day Oldest Listed BridgeUs-31 over Cedar Hedge Creek — built in 1927 All County BridgesBrowse every bridge record in Grand Traverse County.

Top Bridges to Watch in Grand Traverse County

Bridge	Reason	Condition	Daily Traffic	Year Built
Beitner Road over Boardman River	Poor condition + traffic exposure	Poor	19,628	1980
North Union Street over Boardman River	Poor condition + traffic exposure	Poor	4,803	1955
Us-31\|m-37\|m-72\|gr over Boardman River	High traffic	Good	26,650	1951
Three Mile Road over Mitchell Creek	High traffic	Good	24,586	2006
S Airport Road over Boardman River	High traffic	Fair	21,860	1977
S Airport Road over Boardman River	High traffic	Fair	18,938	1961
M-37 over Mdot Rr Corridor	High traffic	Fair	16,500	1965
Eighth Street over Boardman River	High traffic	Good	15,609	1974
Hammond Road over Glc Rr	High traffic	Good	15,578	2009
Us-31 over Tonawanda Creek	High traffic	Fair	15,029	1927

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.