US Bridges

IH 20 EB over FM 1230

Fair

Nolan County, Texas · 1.65 MI E of Mitchell C/L · Structure no. 081770000602304

Built
1967
58 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
164 ft
5 main spans
Daily traffic
10,723
2019 count
Owner
State
State Highway Agency

About this bridge

IH 20 EB over FM 1230 is a concrete continuous slab carrying IH 20 EB over FM 1230 in Nolan County, Texas. It was built in 1967, so it is 58 years old, older than the Texas average of 44.4 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 10,723 vehicles a day, roughly 37% of them trucks, projected to reach 9,370 by 2033. The structure is 164 ft (50 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIH 20 EB
CrossesFM 1230
Location1.65 MI E of Mitchell C/L
RouteInterstate 20
CountyNolan County
StateTexas
Coordinates32.41574, -100.63523
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length164 ft (50 m)
Longest span45 ft (13.7 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,723 (2019)
Projected traffic9,370 by 2033
Trucks37%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 20 EB over FM 1230 built?

It was built in 1967, making it 58 years old in 2025.

What condition is IH 20 EB over FM 1230 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 March 2023.

How much traffic does IH 20 EB over FM 1230 carry?

About 10,723 vehicles per day (2019 count), of which roughly 37% are trucks.

How long is IH 20 EB over FM 1230?

The structure is 164 ft (50 m) long with a longest span of 45 ft (13.7 m) and a deck 42 ft wide.

Who owns IH 20 EB over FM 1230?

It is owned by the State Highway Agency.