US Bridges

Csah 42 over Miss R; Miss Bl

Fair

Ramsey County, Minnesota · At W CO Line · Structure no. 3575

Built
1927
98 years old
Condition
Fair
inspected June 2024
Type
Arch - Deck
Concrete
Length
1,524 ft
5 main spans
Daily traffic
18,900
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 42 over Miss R; Miss Bl is a concrete arch - deck carrying Csah 42 over Miss R; Miss Bl in Ramsey County, Minnesota. It was built in 1927, so it is 98 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 18,900 vehicles a day, projected to reach 15,800 by 2038. The structure is 1,524 ft (464.4 m) long and 84 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 42
CrossesMiss R; Miss Bl
LocationAt W CO Line
RouteCounty Highway 42
CountyRamsey County
StateMinnesota
Coordinates44.9179, -93.20074
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating50.4 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5 (+6 approach)
Design loadHS 25 or greater
Structure length1,524 ft (464.4 m)
Longest span327 ft (99.8 m)
Deck width84 ft (25.5 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,900 (2018)
Projected traffic15,800 by 2038
Trucks—
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Csah 42 over Miss R; Miss Bl built?

It was built in 1927, making it 98 years old in 2025.

What condition is Csah 42 over Miss R; Miss Bl 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 June 2024.

How much traffic does Csah 42 over Miss R; Miss Bl carry?

About 18,900 vehicles per day (2018 count).

How long is Csah 42 over Miss R; Miss Bl?

The structure is 1,524 ft (464.4 m) long with a longest span of 327 ft (99.8 m) and a deck 84 ft wide.

Who owns Csah 42 over Miss R; Miss Bl?

It is owned by the County Highway Agency and maintained by the City or Municipal Highway Agency.