Total bridges
151
Public highway bridges in Kalamazoo County
County profile · official public datasets
Kalamazoo County, MI
151 public highway bridges tracked in the FHWA National Bridge Inventory: 41.1% rated Good, 52.3% Fair, 6.6% Poor.
- 151
- Public bridges
- 41.1%
- Good condition
- 6.6%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Kalamazoo County pairs a better-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 28%
- lowest Poor share in state
- 6.6%
- Poor-condition share
- 151
- public highway bridges
- 1984
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Kalamazoo County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Kalamazoo County ranks #23 of 83 Michigan counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.6%). Kalamazoo County, Michigan contains 151 public highway bridges. Roughly 41.1% are rated “Good,” 52.3% “Fair,” and 6.6% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
41.1%
62 of 151 rated 7-9
Fair condition
52.3%
79 of 151 rated 5-6
Poor condition
6.6%
10 of 151 rated 4 or below
In-state Poor-share rank
#23 of 83
Among Michigan counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 151 NBI-tracked bridges by lowest applicable component rating.
Good 41.1% (62)
Fair 52.3% (79)
Poor 6.6% (10)
Kalamazoo County's Poor-condition bridges carry 61,344 vehicle crossings a day
That is 4.2% of the county's reported daily bridge traffic on 6.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 6,134 crossings a day against 13,165 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 151 of 151 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
38.4% of Kalamazoo County's bridges have passed the 50-year mark
58 of the 151 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 41.1% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 46.1% of the county's Poor-condition bridge traffic
US-131 NB over AMTRAK & KL AVE, built 1963, carries 28,268 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 10-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 61,344 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Kalamazoo County's bridges were built
151 bridges with a recorded construction year, grouped by decade
- 1910s 1
1910–1919
1 bridges
- 1920s 1
1920–1929
1 bridges
- 1930s 6
1930–1939
6 bridges
- 1940s 5
1940–1949
5 bridges
- 1950s 9
1950–1959
9 bridges
- 1960s
1960–1969
28 bridges
- 1970s
1970–1979
13 bridges
- 1980s
1980–1989
14 bridges
- 1990s
1990–1999
25 bridges
- 2000s
2000–2009
27 bridges
- 2010s
2010–2019
18 bridges
- 2020s 4
2020–2029
4 bridges
What this shows Construction peaked in the 1960s, when 28 of the county's bridges still in the inventory were built, which is 18.5% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1984, 8 years newer than the Michigan average of 1976.
How Kalamazoo County compares with Michigan's closest counties by inventory size
The 5 Michigan counties nearest Kalamazoo County in number of bridges, with their condition splits. Its 6.6% Poor share is the 1st-lowest of these 6. Its average build year of 1984 against a peer-group mean of 1976 is 8 years newer.
Showing the 5 closest of 82 Michigan counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Lapeer County | 163 | 36.2% | 54.6% | 9.2% | 1982 |
| Shiawassee County | 163 | 45.4% | 45.4% | 9.2% | 1981 |
| Jackson County | 158 | 34.2% | 55.7% | 10.1% | 1978 |
| Kalamazoo County (this page) | 151 | 41.1% | 52.3% | 6.6% | 1984 |
| Marquette County | 147 | 47.6% | 38.8% | 13.6% | 1972 |
| Muskegon County | 144 | 20.1% | 67.4% | 12.5% | 1968 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Kalamazoo County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Kalamazoo County, both outside Michigan so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MI (151 bridges here).
- Randolph County, AR · 151 bridges
- Pasco County, FL · 151 bridges
- St. Lucie County, FL · 151 bridges
- Hall County, GA · 151 bridges
Similar average build year
Nearest mean year-built outside MI (1984 here).
- Hennepin County, MN · avg 1984 · 936 bridges
- Duval County, FL · avg 1984 · 831 bridges
- El Paso County, CO · avg 1984 · 686 bridges
- Bell County, TX · avg 1984 · 660 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (151)
I-94 WB
GoodOver: 12 TH STREET
0.6 MI W OF US-131, Kalamazoo, MI
Built 2007 Load: 37.6 t ADT: 19,866
NINTH STREET
GoodOver: AMTRAK RR
1.5 MI N OF OSHTEMO, Kalamazoo, MI
Built 2008 Load: 38.2 t ADT: 10,671
I-94 EB
GoodOver: 12 TH STREET
0.6 MI W OF US-131, Kalamazoo, MI
Built 2008 Load: 39.5 t ADT: 19,866
RIVERVIEW DRIVE
GoodOver: SPRING BROOK
1.6 MI N OF PARCHMENT, Kalamazoo, MI
Built 2000 Load: 40.2 t ADT: 5,900
I-94 BL (STADIUM)
GoodOver: US-131
2.3 MI N OF I-94, Kalamazoo, MI
Built 2015 Load: 40.5 t ADT: 36,361
PATERSON STREET
GoodOver: KALAMAZOO RIVER
CITY OF KALAMAZOO, Kalamazoo, MI
Built 1956 Load: 40.5 t ADT: 7,224
O AVENUE
GoodOver: PORTAGE RIVER
0.25 MI E OF 36TH STREET, Kalamazoo, MI
Built 2014 Load: 40.5 t ADT: 200
I-94 WB
GoodOver: US-131 SB TO I-94 EB CON
I-94/US-131 INTERCHANGE, Kalamazoo, MI
Built 2007 Load: 41.1 t ADT: 23,695
ROMENCE ROAD
GoodOver: PORTAGE CREEK
IN PORTAGE TWP SEC 10-15, Kalamazoo, MI
Built 1992 Load: 41.5 t ADT: 16,452
I-94 EB
GoodOver: US-131SB TO I-94 EB CONN
I-94/US-131 INTERCHANGE, Kalamazoo, MI
Built 2008 Load: 41.5 t ADT: 23,695
THIRTY-FIFTH ST
GoodOver: KALAMAZOO RIVER
W GALESBURG LIMITS, Kalamazoo, MI
Built 2008 Load: 42.1 t ADT: 14,452
LAKE STREET
GoodOver: PORTAGE CREEK
IN KALAMAZOO, Kalamazoo, MI
Built 1986 Load: 42.4 t ADT: 2,895
37TH STREET
GoodOver: GULL LAKE OUTLET
ROSS TWP SEC 31, Kalamazoo, MI
Built 2012 Load: 42.4 t ADT: 1,600
I-94 WB
GoodOver: GRAND ELK RR&PORTAGE CRK
3.0 MI E OF US-131, Kalamazoo, MI
Built 2011 Load: 43.7 t ADT: 34,630
U AVENUE
GoodOver: LITTLE PORTAGE CREEK
2 MI N 0.2 MI W OF FULTON, Kalamazoo, MI
Built 1981 Load: 44.7 t ADT: 86
PORTAGE
GoodOver: PORTAGE CREEK
IN KALAMAZOO, Kalamazoo, MI
Built 1986 Load: 46.7 t ADT: 12,623
YZ AVENUE
GoodOver: FLOWERFIELD CREEK
0.6MI W 2MI S /SCHOOLCRAF, Kalamazoo, MI
Built 1986 Load: 47.6 t ADT: 767
V AVENUE
GoodOver: LITTLE PORTAGE CREEK
1 MI N 0.2 MI W OF FULTON, Kalamazoo, MI
Built 2006 Load: 48.0 t ADT: 300
I-94 EB
GoodOver: S WESTNEDGE AVE
2.4 MI E OF US-131, Kalamazoo, MI
Built 2010 Load: 48.3 t ADT: 30,000
I-94 WB
GoodOver: S WESTNEDGE AVE
2.4 MI E OF US-131, Kalamazoo, MI
Built 2011 Load: 48.3 t ADT: 30,000
U AVENUE
GoodOver: PORTAGE RIVER
0.9 MI SE OF INDIAN LAKE, Kalamazoo, MI
Built 2016 Load: 48.3 t ADT: 1,109
HART DRIVE
GoodOver: SAND CREEK
ALAMO TWP SEC 22, Kalamazoo, MI
Built 2006 Load: 48.6 t ADT: 228
I-94 EB
GoodOver: GTW RR
5.7 MI E OF US-131, Kalamazoo, MI
Built 2022 Load: 49.9 t ADT: 33,650
I-94 WB
GoodOver: GTW RR
5.7 MI E OF US-131, Kalamazoo, MI
Built 2022 Load: 49.9 t ADT: 33,650
DUTTON STREET
GoodOver: PORTAGE CREEK
IN CITY OF KALAMAZOO, Kalamazoo, MI
Built 1993 Load: 50.2 t ADT: 900
I-94
GoodOver: NORFOLK SOUTHERN
4.8 MI E OF US-131, Kalamazoo, MI
Built 2022 Load: 51.5 t ADT: 67,300
42ND STREET
GoodOver: LITTLE PORTAGE CREEK
2.3 MI N OF FULTON, Kalamazoo, MI
Built 1993 Load: 53.8 t ADT: 931
W AVENUE
GoodOver: PORTAGE RIVER
2 MI EAST OF VICKSBURG, Kalamazoo, MI
Built 1993 Load: 54.8 t ADT: 4,271
MILLS
GoodOver: KALAMAZOO
IN KALAMAZOO, Kalamazoo, MI
Built 1993 Load: 57.3 t ADT: 11,538
EAST MICHIGAN AVE
GoodOver: KALAMAZOO RIVER
0.2 MI EAST OF GALESBURG, Kalamazoo, MI
Built 1995 Load: 59.0 t ADT: 5,428
SOUTH SPRINKLE RD
GoodOver: MDOT RR CORRIDOR
1 MI W OF COMSTOCK, Kalamazoo, MI
Built 1967 Load: 59.0 t ADT: 31,766
E MICHIGAN AVENUE
GoodOver: COMSTOCK CREEK
IN COMSTOCK, Kalamazoo, MI
Built 1940 Load: 63.8 t ADT: 5,016
D AVENUE
GoodOver: KALAMAZOO RIVER
1.6 MI E OF COOPER CENTER, Kalamazoo, MI
Built 2004 Load: 64.8 t ADT: 8,487
THIRTY-SIXTH ST
GoodOver: DORRANCE CREEK
1.5 MI S OF SCOTTS, Kalamazoo, MI
Built 2018 Load: 71.0 t ADT: 1,835
PARK ST
GoodOver: AXTELL CREEK
CITY OF KALAMAZOO, Kalamazoo, MI
Built 2012 Load: 71.0 t ADT: 12,600
TWENTY-FOURTH ST
GoodOver: PORTAGE CREEK
1.2 MI S OF VICKSBURG, Kalamazoo, MI
Built 1949 Load: 72.3 t ADT: 3,672
RIVER STREET
GoodOver: KALAMAZOO RIVER
IN COMSTOCK, Kalamazoo, MI
Built 2012 Load: 76.8 t ADT: 10,830
S AVENUE
GoodOver: PORTAGE RIVER
0.8 MI N OF INDIAN LAKE, Kalamazoo, MI
Built 2017 Load: 89.7 t ADT: 1,259
X AVENUE
GoodOver: LITTLE PORTAGE CREEK
1 MI S 1.1 MI W OF FULTON, Kalamazoo, MI
Built 1997 Load: 97.2 t ADT: 163
DEER RUN
GoodOver: FLOWERFIELD CREEK
0.9MI S 1.5MI W/SCHOOLCRA, Kalamazoo, MI
Built 1995 Load: 97.2 t ADT: 275
Q AVENUE
GoodOver: PORTAGE RIVER
0.51 MI E OF 29TH STREET, Kalamazoo, MI
Built 2017 Load: 97.2 t ADT: 1,079
TS AVENUE
PoorOver: PORTAGE RIVER
0.3 MI N OF INDIAN LAKE, Kalamazoo, MI
Built 1933 Load: 0.0 t ADT: 82
40TH STREET
PoorOver: LITTLE PORTAGE CREEK
0.8 MI S 1 MI W OF FULTON, Kalamazoo, MI
Built 1912 Load: 0.0 t ADT: 72
WASHINGTON STREET
PoorOver: CANAL(OFF AUGUSTA CREEK)
IN VILLAGE OF AUGUSTA, Kalamazoo, MI
Built 1921 Load: 11.3 t ADT: 174
INKSTER AVENUE
PoorOver: BRONSON BOULEVARD
IN CITY OF KALAMAZOO, Kalamazoo, MI
Built 1990 Load: 11.3 t ADT: 650
MILHAM PARK RD (S)
PoorOver: PORTAGE CREEK
CITY OF KALAMAZOO, Kalamazoo, MI
Built 1935 Load: 19.6 t ADT: 360
XY AVENUE
PoorOver: BEAR CREEK
BRADY TWP SEC 27, Kalamazoo, MI
Built 1977 Load: 22.0 t ADT: 70
US-131 BR NB
PoorOver: DOUGLAS AVE
3.2 MI E OF US-131, Kalamazoo, MI
Built 1963 Load: 33.4 t ADT: 3,343
Y AVENUE
PoorOver: BEAR CREEK
1.8MI S 3.1MI E OF VICKS, Kalamazoo, MI
Built 1970 Load: 37.9 t ADT: 57
US-131 SB
PoorOver: AMTRAK & KL AVE
3.0 MI N OF I-94, Kalamazoo, MI
Built 1963 Load: 46.3 t ADT: 28,268
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.