US Bridges

CR 488 over Flint Creek

Good

St. Louis County, Minnesota · 0.3 MI N of JCT TH53 · Structure no. 69K38

Built
2016
9 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
35 ft
2 main spans
Daily traffic
30
2015 count
Owner
County
County Highway Agency

About this bridge

CR 488 over Flint Creek is a concrete culvert carrying CR 488 over Flint Creek in St. Louis County, Minnesota. It was built in 2016, so it is 9 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 30 vehicles a day, projected to reach 54 by 2035. The structure is 35 ft (10.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 488
CrossesFlint Creek
Location0.3 MI N of JCT TH53
RouteCounty Highway 488
CountySt. Louis County
StateMinnesota
Coordinates47.88423, -92.76154
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length35 ft (10.8 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2015)
Projected traffic54 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 488 over Flint Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is CR 488 over Flint 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 August 2023.

How much traffic does CR 488 over Flint Creek carry?

About 30 vehicles per day (2015 count).

How long is CR 488 over Flint Creek?

The structure is 35 ft (10.8 m) long with a longest span of 16 ft (4.9 m).

Who owns CR 488 over Flint Creek?

It is owned by the County Highway Agency.