Poor Condition Bridges in Iowa

4,423 bridges rated Poor condition in Iowa. FHWA National Bridge Inventory.

Bridges Rated Poor Condition

A bridge is rated Poor when one or more of its major components (deck, superstructure, or substructure) has a condition rating of 4 or below on the FHWA 0–9 scale. Poor condition does not mean imminent danger of collapse, but indicates significant deterioration requiring priority maintenance or replacement. There are 4,423 such bridges in Iowa.

Clear
Bridge State Condition Year Built ADT Length
OVER ABANDON RR Iowa 1900 387 33.5 m
DRAINAGE Iowa 1925 383 8.8 m
BACON CREEK Iowa 1958 383 35.1 m
LOWE RUN Iowa 1928 380 7.6 m
SMALL DRY RUN Iowa 1920 380 16.3 m
BIG CEDAR CK DD #41 Iowa 1969 379 9.8 m
WELDON RIVER Iowa 1958 379 77.4 m
UNNAMED CREEK Iowa 1961 379 23.5 m
UNNAMED STREAM Iowa 1961 379 23.8 m
CREEK Iowa 1962 379 6.4 m
DEER CREEK Iowa 1968 379 23.5 m
SMALL Iowa 1900 379 6.4 m
WATERWAY Iowa 1900 379 7.6 m
DRAINAGE DITCH 9-13 Iowa 1970 379 13.7 m
GRAND RIVER Iowa 1940 379 55.8 m
RAILROAD CREEK Iowa 1900 377 13.1 m
LINDNER CREEK Iowa 1969 376 23.9 m
SINK CREEK Iowa 1900 373 6.1 m
SOUTH FORK IOWA RIVER Iowa 1964 373 39.0 m
BRANCH YELLOW RIVER Iowa 1922 373 6.7 m
SMALL STREAM Iowa 1970 373 31.4 m
SMALL STREAM Iowa 1969 373 23.5 m
WEST FORK CEDAR RIVER Iowa 1970 373 150.0 m
HONEY CREEK Iowa 1967 373 26.8 m
WOLF CREEK BRANCH Iowa 1972 373 9.8 m
CREEK Iowa 1900 373 6.7 m
ROCK CREEK Iowa 1985 370 31.4 m
N SKUNK RIVER Iowa 1966 370 61.6 m
OVER UP RR Iowa 1961 370 46.6 m
BONNELL CREEK Iowa 1949 370 31.1 m
N SKUNK RIVER OVERFLOW Iowa 1961 370 54.3 m
BIG CREEK Iowa 1962 369 39.0 m
UNNAMED CREEK Iowa 1900 369 7.0 m
KANARANZI CREEK Iowa 1959 369 61.6 m
LITTLE SIOUX RIVER Iowa 1954 369 115.2 m
LITTLE ROCK RIVER Iowa 1955 369 61.0 m
BEAVER CREEK Iowa 1973 369 27.7 m
LINN CR Iowa 1956 369 33.5 m
DRAINAGE DITCH Iowa 1960 369 39.9 m
BRANCH MAPLE RIVER Iowa 1970 369 23.5 m
BIG MUDDY CREEK Iowa 1963 369 31.4 m
SMALL STREAM Iowa 1990 369 7.9 m
SHELLROCK RIVER Iowa 1958 363 55.5 m
SALT CREEK Iowa 1969 363 70.1 m
SO BRANCH SALT CREEK Iowa 1969 363 39.3 m
SMALL STREAM Iowa 1924 361 10.4 m
BNSF RR Iowa 1936 360 62.2 m
OVER UP RR Iowa 1936 360 62.2 m
LAKE CR. Iowa 1978 359 39.0 m
E FORK DES MOINES RIVER Iowa 1973 359 38.9 m

About Poor Condition Bridge Ratings

FHWA rates bridge components on a 0–9 scale. A rating of 4 or below on any major component (deck, superstructure, substructure) classifies the bridge as Poor condition. The bridge remains open to traffic but requires priority attention. Bridges rated 0–2 are immediately closed.