US Bridges

Hollow RD over Long Br

Good

Linn County, Missouri · S 11 T 59 N R 20 W · Structure no. 31665

Built
2006
19 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
91 ft
1 main span
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

Hollow RD over Long Br is a steel stringer/multi-beam or girder carrying Hollow RD over Long Br in Linn County, Missouri. It was built in 2006, so it is 19 years old, younger 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 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 25 vehicles a day, roughly 5% of them trucks, projected to reach 28 by 2044. The structure is 91 ft (27.7 m) long and 25 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesHollow RD
CrossesLong Br
LocationS 11 T 59 N R 20 W
RouteCounty Highway 196
Coordinates39.9434, -93.09465
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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.5 US tons
Inventory rating38.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length91 ft (27.7 m)
Longest span90 ft (27.4 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic28 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Hollow RD over Long Br built?

It was built in 2006, making it 19 years old in 2025.

What condition is Hollow RD over Long Br 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 November 2024.

How much traffic does Hollow RD over Long Br carry?

About 25 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Hollow RD over Long Br?

The structure is 91 ft (27.7 m) long with a longest span of 90 ft (27.4 m) and a deck 25 ft wide.

Who owns Hollow RD over Long Br?

It is owned by the County Highway Agency.