US Bridges

I 20 over Tunnel Carrying KCS RR

Fair

Warren County, Mississippi · 1.0 MI E LA State Line · Structure no. 170002007500090

Built
1971
54 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
35 ft
1 main span
Daily traffic
6,800
2023 count
Owner
State
State Highway Agency

About this bridge

I 20 over Tunnel Carrying KCS RR is a concrete culvert carrying I 20 over Tunnel Carrying KCS RR in Warren County, Mississippi. It was built in 1971, so it is 54 years old, older than the Mississippi average of 38.9 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 6,800 vehicles a day, roughly 6% of them trucks, projected to reach 6,800 by 2043. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 20
CrossesTunnel Carrying KCS RR
Location1.0 MI E LA State Line
RouteInterstate 20
CountyWarren County
StateMississippi
Coordinates32.3116, -90.89964
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
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length35 ft (10.7 m)
Longest span35 ft (10.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,800 (2023)
Projected traffic6,800 by 2043
Trucks6%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 20 over Tunnel Carrying KCS RR built?

It was built in 1971, making it 54 years old in 2025.

What condition is I 20 over Tunnel Carrying KCS RR 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 September 2023.

How much traffic does I 20 over Tunnel Carrying KCS RR carry?

About 6,800 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is I 20 over Tunnel Carrying KCS RR?

The structure is 35 ft (10.7 m) long with a longest span of 35 ft (10.7 m).

Who owns I 20 over Tunnel Carrying KCS RR?

It is owned by the State Highway Agency.