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.
Fair-condition bridges (79)
D AVENUE
FairOver: GULL LAKE OUTLET
IN YORKVILLE S OF GULL LK, Kalamazoo, MI
Built 1984 Load: 15.9 t ADT: 1,247
2ND STREET
FairOver: SAND CREEK
ALAMO TWP SEC 29&30, Kalamazoo, MI
Built 1976 Load: 15.9 t ADT: 883
V AVENUE
FairOver: PORTAGE RIVER
3 MI E OF VICKSBURG, Kalamazoo, MI
Built 1971 Load: 19.1 t ADT: 698
Y AVENUE
FairOver: PORTAGE CREEK
1.75MI S & 0.75MI E /VICK, Kalamazoo, MI
Built 1972 Load: 19.4 t ADT: 665
MILHAM PARK RD (N)
FairOver: PORTAGE CREEK
CITY OF KALAMAZOO, Kalamazoo, MI
Built 1935 Load: 19.6 t ADT: 200
AUGUSTA DRIVE
FairOver: AUGUSTA CREEK
IN AUGUSTA, Kalamazoo, MI
Built 1930 Load: 21.1 t ADT: 3,250
Z AVENUE
FairOver: PORTAGE CREEK
2.6MI S 0.9MI E OF VICKS, Kalamazoo, MI
Built 1972 Load: 21.4 t ADT: 131
29TH STREET
FairOver: PORTAGE RIVER
1 MI S OF INDIAN LAKE, Kalamazoo, MI
Built 1962 Load: 22.4 t ADT: 784
PARKVIEW (M AVE)
FairOver: US-131
1.6 MI N OF I-94, Kalamazoo, MI
Built 2008 Load: 24.3 t ADT: 11,200
DE AVENUE
FairOver: GULL LAKE OUTLET
0.5 MI S OF YORKVILLE, Kalamazoo, MI
Built 1937 Load: 25.6 t ADT: 1,069
S US-131 TO E I-94
FairOver: NB US-131
I-94/US-131 INTERCHANGE, Kalamazoo, MI
Built 2008 Load: 25.6 t ADT: 23,695
M-43 (E MICH AVE)
FairOver: KALAMAZOO RIVER
IN KALAMAZOO, Kalamazoo, MI
Built 1995 Load: 28.5 t ADT: 18,825
PITCHER STREET
FairOver: PORTAGE CREEK
CITY OF KALAMAZOO, Kalamazoo, MI
Built 1982 Load: 29.2 t ADT: 9,500
H AVE
FairOver: US-131
5.8 MI N OF I-94, Kalamazoo, MI
Built 1962 Load: 29.8 t ADT: 4,026
S US-131 TO E I-94
FairOver: SB US-131
I-94/US-131 INTERCHANGE, Kalamazoo, MI
Built 2008 Load: 30.1 t ADT: 23,695
35TH STREET
FairOver: I-94
4.2 MI E OF I-94 BL, Kalamazoo, MI
Built 1951 Load: 30.5 t ADT: 12,500
38TH STREET
FairOver: I-94
5.7 MI E OF I-94 BL, Kalamazoo, MI
Built 1951 Load: 30.8 t ADT: 782
6 TH STREET
FairOver: I-94
3.3 MI E OF VAN BUREN COL, Kalamazoo, MI
Built 1959 Load: 31.1 t ADT: 2,400
US-131 SB
FairOver: D AVE
3.0 MI S OF ALLEGAN COL, Kalamazoo, MI
Built 1962 Load: 31.4 t ADT: 18,604
US-131 NB
FairOver: D AVE
3.0 MI S OF ALLEGAN COL, Kalamazoo, MI
Built 1962 Load: 31.4 t ADT: 18,604
US-131 BR SB
FairOver: RAVINE ROAD
1.2 MI E OF US-131, Kalamazoo, MI
Built 1963 Load: 31.4 t ADT: 2,811
CENTRE AVE (Q AVE)
FairOver: US-131
2.8 MI S OF I-94, Kalamazoo, MI
Built 1963 Load: 31.8 t ADT: 17,883
M-96 (MICH AVE)
FairOver: KALAMAZOO RIVER
AT SE LIMITS OF AUGUSTA, Kalamazoo, MI
Built 1962 Load: 32.4 t ADT: 6,843
US-131 BR SB
FairOver: DOUGLAS AVE
3.2 MI E OF US-131, Kalamazoo, MI
Built 1963 Load: 32.4 t ADT: 3,343
US-131 BR NB
FairOver: RAVINE ROAD
1.2 MI E OF US-131, Kalamazoo, MI
Built 1963 Load: 32.4 t ADT: 2,811
33RD STREET
FairOver: DORRANCE CREEK
0.8 MI E OF INDIAN LAKE, Kalamazoo, MI
Built 1948 Load: 32.7 t ADT: 282
ALCOTT STREET
FairOver: PORTAGE CREEK
CITY OF KALAMAZOO, Kalamazoo, MI
Built 1991 Load: 32.7 t ADT: 5,377
9 TH STREET
FairOver: I-94
4.8 MI E OF VAN BUREN COL, Kalamazoo, MI
Built 1996 Load: 33.0 t ADT: 24,675
B AVE
FairOver: US-131
1.0 MI S OF ALLEGAN COL, Kalamazoo, MI
Built 1962 Load: 34.0 t ADT: 736
M-89
FairOver: GULL CREEK
0.1 MI W OF 37 TH STREET, Kalamazoo, MI
Built 1949 Load: 34.0 t ADT: 5,044
4 TH STREET
FairOver: I-94
2.1 MI E OF VAN BUREN COL, Kalamazoo, MI
Built 1959 Load: 34.3 t ADT: 1,111
I-94 BL
FairOver: DAVIS CREEK
1.4 M SE JCT M-96 & I-94L, Kalamazoo, MI
Built 1954 Load: 34.7 t ADT: 12,396
O AVENUE
FairOver: AMTRAK/CONRAIL RR
4.3MI W 2MI S OF OSHTEMO, Kalamazoo, MI
Built 1992 Load: 34.7 t ADT: 510
ROELL ROAD
FairOver: HOWARD STREET
500 FT NW OF I-94 BL, Kalamazoo, MI
Built 1979 Load: 35.0 t ADT: 3,500
E VINE
FairOver: PORTAGE CREEK
IN KALAMAZOO, Kalamazoo, MI
Built 1988 Load: 35.6 t ADT: 5,600
US-131 BR SB
FairOver: US-131 NB
AT N JCT US-131 BR, Kalamazoo, MI
Built 1963 Load: 36.3 t ADT: 2,811
WALNUT STREET
FairOver: PORTAGE CREEK
IN CITY OF KALAMAZOO, Kalamazoo, MI
Built 1985 Load: 36.9 t ADT: 4,189
BARNEY RD (H AVE)
FairOver: US-131 BR
2.5 MI E OF US-131, Kalamazoo, MI
Built 1964 Load: 37.3 t ADT: 5,583
I-94 BL EB
FairOver: I-94
@ I-94 BL, Kalamazoo, MI
Built 1955 Load: 37.6 t ADT: 3,921
MOSEL AVENUE
FairOver: KALAMAZOO RIVER
N KALAMAZOO CITY LIMITS, Kalamazoo, MI
Built 1990 Load: 37.9 t ADT: 13,436
US-131 BR SB
FairOver: NICHOLS RD (14TH ST)
2.0 MI E OF US-131, Kalamazoo, MI
Built 1963 Load: 38.9 t ADT: 2,811
US-131 BR NB
FairOver: NICHOLS RD (14TH ST)
2.0 MI E OF US-131, Kalamazoo, MI
Built 1963 Load: 39.5 t ADT: 2,811
MICHIGAN AVE
FairOver: US-131
2.5 MI N OF I-94, Kalamazoo, MI
Built 1963 Load: 39.9 t ADT: 4,405
LOVERS LANE
FairOver: PORTAGE CREEK
CITY OF KALAMAZOO, Kalamazoo, MI
Built 1982 Load: 39.9 t ADT: 11,381
SOUTH SPRINKLE RD
FairOver: KALAMAZOO RIVER
1 MI W OF COMSTOCK, Kalamazoo, MI
Built 2003 Load: 41.8 t ADT: 31,766
REED STREET
FairOver: PORTAGE CREEK
CITY OF KALAMAZOO, Kalamazoo, MI
Built 1983 Load: 41.8 t ADT: 3,647
STOCKBRIDGE STREET
FairOver: PORTAGE CREEK
IN KALAMAZOO, Kalamazoo, MI
Built 1983 Load: 41.8 t ADT: 6,552
M-89
FairOver: AUGUSTA CREEK
0.1 MI E OF 42 ND STREET, Kalamazoo, MI
Built 1993 Load: 42.1 t ADT: 5,044
MILHAM RD (O AVE)
FairOver: US-131
0.6 MI S OF I-94, Kalamazoo, MI
Built 1999 Load: 42.4 t ADT: 8,900
I-94 EB
FairOver: GRAND ELK RR&PORTAGE CRK
3.0 MI E OF US-131, Kalamazoo, MI
Built 2009 Load: 42.8 t ADT: 34,630
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.