US Bridges

Msas 108 over Straight River

Fair

Rice County, Minnesota · 0.3 MI W of JCT TH 299 · Structure no. 66508

Built
1969
56 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
139 ft
2 main spans
Daily traffic
4,800
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

Msas 108 over Straight River is a prestressed concrete stringer/multi-beam or girder carrying Msas 108 over Straight River in Rice County, Minnesota. It was built in 1969, so it is 56 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 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 4,800 vehicles a day, projected to reach 4,800 by 2039. The structure is 139 ft (42.4 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMsas 108
CrossesStraight River
Location0.3 MI W of JCT TH 299
RouteCity Street 108
CountyRice County
StateMinnesota
Coordinates44.29368, -93.26475
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: 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 rating42.8 US tons
Inventory rating25.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length139 ft (42.4 m)
Longest span68 ft (20.6 m)
Deck width46 ft (14 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,800 (2016)
Projected traffic4,800 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Msas 108 over Straight River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Msas 108 over Straight 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 April 2023.

How much traffic does Msas 108 over Straight River carry?

About 4,800 vehicles per day (2016 count).

How long is Msas 108 over Straight River?

The structure is 139 ft (42.4 m) long with a longest span of 68 ft (20.6 m) and a deck 46 ft wide.

Who owns Msas 108 over Straight River?

It is owned by the City or Municipal Highway Agency.