US Bridges

FM over Drainage Ditch 69

Fair

Webster County, Iowa · 089303402 · Structure no. 000000000343551

Built
1973
52 years old
Condition
Fair
inspected October 2022
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
578
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Drainage Ditch 69 is a concrete slab carrying FM over Drainage Ditch 69 in Webster County, Iowa. It was built in 1973, so it is 52 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 5 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 578 vehicles a day, roughly 43% of them trucks, projected to reach 578 by 2042. The structure is 32 ft (9.8 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM
CrossesDrainage Ditch 69
Location089303402
RouteCounty Highway 0
CountyWebster County
StateIowa
Coordinates42.47886, -94.38393
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating27.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic578 (2022)
Projected traffic578 by 2042
Trucks43%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Drainage Ditch 69 built?

It was built in 1973, making it 52 years old in 2025.

What condition is FM over Drainage Ditch 69 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 October 2022.

How much traffic does FM over Drainage Ditch 69 carry?

About 578 vehicles per day (2022 count), of which roughly 43% are trucks.

How long is FM over Drainage Ditch 69?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns FM over Drainage Ditch 69?

It is owned by the County Highway Agency.