US Bridges

Gilsinn LN over Br of Meramec Rvr

Fair

St. Louis County, Missouri · S 21 T 44 N R 6 E · Structure no. 17083

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
2,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Gilsinn LN over Br of Meramec Rvr is a concrete culvert carrying Gilsinn LN over Br of Meramec Rvr in St. Louis County, Missouri. It was built in 1975, so it is 50 years old, older than the Missouri average of 45.1 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 2,000 vehicles a day, roughly 6% of them trucks, projected to reach 2,700 by 2043. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesGilsinn LN
CrossesBr of Meramec Rvr
LocationS 21 T 44 N R 6 E
RouteCity Street 0
CountySt. Louis County
StateMissouri
Coordinates38.53983, -90.4643
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadOther
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2023)
Projected traffic2,700 by 2043
Trucks6%
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 Gilsinn LN over Br of Meramec Rvr built?

It was built in 1975, making it 50 years old in 2025.

What condition is Gilsinn LN over Br of Meramec Rvr 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 November 2023.

How much traffic does Gilsinn LN over Br of Meramec Rvr carry?

About 2,000 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Gilsinn LN over Br of Meramec Rvr?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns Gilsinn LN over Br of Meramec Rvr?

It is owned by the City or Municipal Highway Agency.