US Bridges

Huffman Ave. over Portage Open Bay

Good

New Madrid County, Missouri · S 36 T 21 N R 12 E · Structure no. 22325

Built
1921
104 years old, rebuilt 1985
Condition
Good
inspected December 2024
Type
Channel Beam
Concrete
Length
97 ft
3 main spans
Daily traffic
400
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Huffman Ave. over Portage Open Bay is a concrete channel beam carrying Huffman Ave. over Portage Open Bay in New Madrid County, Missouri. It was built in 1921 and reconstructed in 1985, so it is 104 years old, older than the Missouri average of 45.1 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 400 vehicles a day, roughly 10% of them trucks, projected to reach 540 by 2043. The structure is 97 ft (29.6 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHuffman Ave.
CrossesPortage Open Bay
LocationS 36 T 21 N R 12 E
RouteCounty Highway 351
CountyNew Madrid County
StateMissouri
Coordinates36.41877, -89.70201
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating24.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length97 ft (29.6 m)
Longest span36 ft (11 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2023)
Projected traffic540 by 2043
Trucks10%
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

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 Huffman Ave. over Portage Open Bay built?

It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1985.

What condition is Huffman Ave. over Portage Open Bay 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 December 2024.

How much traffic does Huffman Ave. over Portage Open Bay carry?

About 400 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Huffman Ave. over Portage Open Bay?

The structure is 97 ft (29.6 m) long with a longest span of 36 ft (11 m) and a deck 25 ft wide.

Who owns Huffman Ave. over Portage Open Bay?

It is owned by the City or Municipal Highway Agency.