US Bridges

US 14 over Redwood River

Fair

Lyon County, Minnesota · 2.0 MI E of Florence · Structure no. 4758

Built
1928
97 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
1,064
2022 count
Owner
State
State Highway Agency

About this bridge

US 14 over Redwood River is a concrete culvert carrying US 14 over Redwood River in Lyon County, Minnesota. It was built in 1928, so it is 97 years old, older than the Minnesota average of 38.5 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 1,064 vehicles a day, roughly 18% of them trucks, projected to reach 1,150 by 2042. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUS 14
CrossesRedwood River
Location2.0 MI E of Florence
RouteU.S. Route 14
Coordinates44.23976, -96.00869
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
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 rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,064 (2022)
Projected traffic1,150 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$93 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 14 over Redwood River built?

It was built in 1928, making it 97 years old in 2025.

What condition is US 14 over Redwood 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 November 2024.

How much traffic does US 14 over Redwood River carry?

About 1,064 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is US 14 over Redwood River?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m).

Who owns US 14 over Redwood River?

It is owned by the State Highway Agency.