US Bridges

US 65 over Otter Creek

Good

Franklin County, Iowa · 0.5 Mi. S of S.R. C-25 · Structure no. 000000000025131

Built
1983
42 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete Continuous
Length
123 ft
3 main spans
Daily traffic
2,960
2023 count
Owner
State
State Highway Agency

About this bridge

US 65 over Otter Creek is a concrete continuous slab carrying US 65 over Otter Creek in Franklin County, Iowa. It was built in 1983, so it is 42 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,960 vehicles a day, roughly 11% of them trucks, projected to reach 2,960 by 2043. The structure is 123 ft (37.5 m) long and 43 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesUS 65
CrossesOtter Creek
Location0.5 Mi. S of S.R. C-25
RouteU.S. Route 65
StateIowa
Coordinates42.79492, -93.20224
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.6 US tons
Inventory rating23.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length123 ft (37.5 m)
Longest span47 ft (14.3 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,960 (2023)
Projected traffic2,960 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 65 over Otter Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is US 65 over Otter Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does US 65 over Otter Creek carry?

About 2,960 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US 65 over Otter Creek?

The structure is 123 ft (37.5 m) long with a longest span of 47 ft (14.3 m) and a deck 43 ft wide.

Who owns US 65 over Otter Creek?

It is owned by the State Highway Agency.