US Bridges

US 69 over Grand River

Fair

Decatur County, Iowa · 0.6 Mi. N of SR J-66 · Structure no. 000000000022621

Built
2011
14 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
372 ft
3 main spans
Daily traffic
820
2022 count
Owner
State
State Highway Agency

About this bridge

US 69 over Grand River is a prestressed concrete stringer/multi-beam or girder carrying US 69 over Grand River in Decatur County, Iowa. It was built in 2011, so it is 14 years old, younger 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 820 vehicles a day, roughly 12% of them trucks, projected to reach 820 by 2043. The structure is 372 ft (113.4 m) long and 58 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesUS 69
CrossesGrand River
Location0.6 Mi. N of SR J-66
RouteU.S. Route 69
StateIowa
Coordinates40.64032, -93.80808
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.2 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length372 ft (113.4 m)
Longest span152 ft (46.3 m)
Deck width58 ft (17.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic820 (2022)
Projected traffic820 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 69 over Grand River built?

It was built in 2011, making it 14 years old in 2025.

What condition is US 69 over Grand River 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 August 2023.

How much traffic does US 69 over Grand River carry?

About 820 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is US 69 over Grand River?

The structure is 372 ft (113.4 m) long with a longest span of 152 ft (46.3 m) and a deck 58 ft wide.

Who owns US 69 over Grand River?

It is owned by the State Highway Agency.