US Bridges

Mathews ST over Drainage Ditch #70

Fair

Story County, Iowa · 000000000 · Structure no. 000000000500150

Built
1969
56 years old
Condition
Fair
inspected December 2022
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
1,626
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mathews ST over Drainage Ditch #70 is a concrete continuous culvert carrying Mathews ST over Drainage Ditch #70 in Story County, Iowa. It was built in 1969, so it is 56 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,626 vehicles a day, projected to reach 1,626 by 2043. The structure is 27 ft (8.2 m) long.

Location

Open in Google Maps
CarriesMathews ST
CrossesDrainage Ditch #70
Location000000000
RouteCity Street 0
CountyStory County
StateIowa
Coordinates42.10679, -93.64737
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.4 US tons
Inventory rating20 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,626 (2022)
Projected traffic1,626 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mathews ST over Drainage Ditch #70 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Mathews ST over Drainage Ditch #70 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2022.

How much traffic does Mathews ST over Drainage Ditch #70 carry?

About 1,626 vehicles per day (2022 count).

How long is Mathews ST over Drainage Ditch #70?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m).

Who owns Mathews ST over Drainage Ditch #70?

It is owned by the City or Municipal Highway Agency.