Bridge Safety in Michigan
11,397 bridges, 1,250 Poor condition, avg age 48 years.
Bridge Inventory
| Total Bridges | 11,397 |
| Good Condition | 3,778 |
| Fair Condition | 6,369 |
| Poor Condition | 1,250 |
| Oldest Bridge | Built 1867 |
| Average Age | 48 years |
Condition Summary
| % Good | 33.1% |
| % Fair | 55.9% |
| % Poor | 11.0% |
Highest-Traffic Poor Condition Bridges in Michigan
Poor condition bridges sorted by daily traffic, the most urgent safety concerns.
| Bridge | Condition | Year Built | ADT | Length |
|---|---|---|---|---|
| I-75 & 4 RAMPS | Poor | 1971 | 209,200 | - |
| ENT TO FORD PLANT | Poor | 1971 | 98,506 | - |
| ECORSE CREEK | Poor | 1963 | 92,920 | - |
| M-39 (SOUTHFIELD EXPR) | Poor | 1970 | 78,863 | - |
| ECORSE RD | Poor | 1962 | 74,175 | - |
| CONRAIL RAISIN R FRONT | Poor | 1955 | 67,800 | - |
| M-36 | Poor | 1960 | 64,800 | - |
| DAVISON - BROADWAY AVES | Poor | 1976 | 63,400 | - |
| CHAVEZ DR | Poor | 1976 | 63,400 | - |
| BEECH-DALY RD | Poor | 1962 | 60,077 | - |
| CSX RR & NB SERV RD(ABN) | Poor | 1971 | 59,000 | - |
| CONRAIL (NO TRACKS)(ABN) | Poor | 1963 | 57,075 | - |
| SEXTON KILFOIL DRAIN | Poor | 1928 | 53,839 | - |
| US-131 BR (LEONARD) | Poor | 1961 | 50,972 | - |
| US-131 BR (LEONARD) | Poor | 1961 | 50,972 | - |
| 6TH AVE | Poor | 1963 | 50,972 | - |
| 6TH AVE | Poor | 1963 | 50,972 | - |
| GRAND RIVER AVE | Poor | 1962 | 44,600 | - |
| GRAND RIVER AVE | Poor | 1962 | 44,600 | - |
| HESR | Poor | 1960 | 44,350 | - |
Oldest Bridges in Michigan
| Bridge | Condition | Year Built | Age | ADT |
|---|---|---|---|---|
| FLAT RIVER | Fair | 1867 | 159 yrs | 144 |
| FLAT RIVER | Fair | 1871 | 155 yrs | 122 |
| HURON RIVER | Fair | 1876 | 150 yrs | 1,963 |
| ST JOSEPH RIVER | Fair | 1885 | 141 yrs | 1,144 |
| KALAMAZOO RIVER | Fair | 1886 | 140 yrs | 2,582 |
| GRAND RIVER | Fair | 1886 | 140 yrs | 4,550 |
| S FORK OF HAYWORTH | Poor | 1890 | 136 yrs | 119 |
| GRAND RIVER | Fair | 1890 | 136 yrs | 1,100 |
| FISH CREEK | Fair | 1895 | 131 yrs | 30 |
| NORTH MACON DRAIN | Fair | 1897 | 129 yrs | 21 |
Bridge Safety in Michigan
Bridge condition data for Michigan comes from the FHWA National Bridge Inventory. All publicly accessible bridges with a span over 20 feet are inspected at least every 24 months by certified bridge inspectors.